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cos^22x=2

cos^22x=2 уравнение

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Решение

Вы ввели [src]
   22       
cos  (x) = 2
cos22(x)=2\cos^{22}{\left(x \right)} = 2
Подробное решение
Дано уравнение
cos22(x)=2\cos^{22}{\left(x \right)} = 2
преобразуем
cos22(x)2=0\cos^{22}{\left(x \right)} - 2 = 0
cos22(x)2=0\cos^{22}{\left(x \right)} - 2 = 0
Сделаем замену
w=cos(x)w = \cos{\left(x \right)}
Дано уравнение
w222=0w^{22} - 2 = 0
Т.к. степень в уравнении равна = 22 - содержит чётное число 22 в числителе, то
уравнение будет иметь два действительных корня.
Извлечём корень 22-й степени из обеих частей уравнения:
Получим:
(1w+0)2222=222\sqrt[22]{\left(1 w + 0\right)^{22}} = \sqrt[22]{2}
(1w+0)2222=222\sqrt[22]{\left(1 w + 0\right)^{22}} = - \sqrt[22]{2}
или
w=222w = \sqrt[22]{2}
w=222w = - \sqrt[22]{2}
Раскрываем скобочки в правой части уравнения
w = 2^1/22

Получим ответ: w = 2^(1/22)
Раскрываем скобочки в правой части уравнения
w = -2^1/22

Получим ответ: w = -2^(1/22)
или
w1=222w_{1} = - \sqrt[22]{2}
w2=222w_{2} = \sqrt[22]{2}

Остальные 20 корня(ей) являются комплексными.
сделаем замену:
z=wz = w
тогда уравнение будет таким:
z22=2z^{22} = 2
Любое комплексное число можно представить так:
z=reipz = r e^{i p}
подставляем в уравнение
r22e22ip=2r^{22} e^{22 i p} = 2
где
r=222r = \sqrt[22]{2}
- модуль комплексного числа
Подставляем r:
e22ip=1e^{22 i p} = 1
Используя формулу Эйлера, найдём корни для p
isin(22p)+cos(22p)=1i \sin{\left(22 p \right)} + \cos{\left(22 p \right)} = 1
значит
cos(22p)=1\cos{\left(22 p \right)} = 1
и
sin(22p)=0\sin{\left(22 p \right)} = 0
тогда
p=πN11p = \frac{\pi N}{11}
где N=0,1,2,3,...
Перебирая значения N и подставив p в формулу для z
Значит, решением будет для z:
z1=222z_{1} = - \sqrt[22]{2}
z2=222z_{2} = \sqrt[22]{2}
z3=222cos(π11)222isin(π11)z_{3} = - \sqrt[22]{2} \cos{\left(\frac{\pi}{11} \right)} - \sqrt[22]{2} i \sin{\left(\frac{\pi}{11} \right)}
z4=222cos(π11)+222isin(π11)z_{4} = - \sqrt[22]{2} \cos{\left(\frac{\pi}{11} \right)} + \sqrt[22]{2} i \sin{\left(\frac{\pi}{11} \right)}
z5=222cos(π11)222isin(π11)z_{5} = \sqrt[22]{2} \cos{\left(\frac{\pi}{11} \right)} - \sqrt[22]{2} i \sin{\left(\frac{\pi}{11} \right)}
z6=222cos(π11)+222isin(π11)z_{6} = \sqrt[22]{2} \cos{\left(\frac{\pi}{11} \right)} + \sqrt[22]{2} i \sin{\left(\frac{\pi}{11} \right)}
z7=222cos(2π11)222isin(2π11)z_{7} = - \sqrt[22]{2} \cos{\left(\frac{2 \pi}{11} \right)} - \sqrt[22]{2} i \sin{\left(\frac{2 \pi}{11} \right)}
z8=222cos(2π11)+222isin(2π11)z_{8} = - \sqrt[22]{2} \cos{\left(\frac{2 \pi}{11} \right)} + \sqrt[22]{2} i \sin{\left(\frac{2 \pi}{11} \right)}
z9=222cos(2π11)222isin(2π11)z_{9} = \sqrt[22]{2} \cos{\left(\frac{2 \pi}{11} \right)} - \sqrt[22]{2} i \sin{\left(\frac{2 \pi}{11} \right)}
z10=222cos(2π11)+222isin(2π11)z_{10} = \sqrt[22]{2} \cos{\left(\frac{2 \pi}{11} \right)} + \sqrt[22]{2} i \sin{\left(\frac{2 \pi}{11} \right)}
z11=222cos(3π11)222isin(3π11)z_{11} = - \sqrt[22]{2} \cos{\left(\frac{3 \pi}{11} \right)} - \sqrt[22]{2} i \sin{\left(\frac{3 \pi}{11} \right)}
z12=222cos(3π11)+222isin(3π11)z_{12} = - \sqrt[22]{2} \cos{\left(\frac{3 \pi}{11} \right)} + \sqrt[22]{2} i \sin{\left(\frac{3 \pi}{11} \right)}
z13=222cos(3π11)222isin(3π11)z_{13} = \sqrt[22]{2} \cos{\left(\frac{3 \pi}{11} \right)} - \sqrt[22]{2} i \sin{\left(\frac{3 \pi}{11} \right)}
z14=222cos(3π11)+222isin(3π11)z_{14} = \sqrt[22]{2} \cos{\left(\frac{3 \pi}{11} \right)} + \sqrt[22]{2} i \sin{\left(\frac{3 \pi}{11} \right)}
z15=222cos(4π11)222isin(4π11)z_{15} = - \sqrt[22]{2} \cos{\left(\frac{4 \pi}{11} \right)} - \sqrt[22]{2} i \sin{\left(\frac{4 \pi}{11} \right)}
z16=222cos(4π11)+222isin(4π11)z_{16} = - \sqrt[22]{2} \cos{\left(\frac{4 \pi}{11} \right)} + \sqrt[22]{2} i \sin{\left(\frac{4 \pi}{11} \right)}
z17=222cos(4π11)222isin(4π11)z_{17} = \sqrt[22]{2} \cos{\left(\frac{4 \pi}{11} \right)} - \sqrt[22]{2} i \sin{\left(\frac{4 \pi}{11} \right)}
z18=222cos(4π11)+222isin(4π11)z_{18} = \sqrt[22]{2} \cos{\left(\frac{4 \pi}{11} \right)} + \sqrt[22]{2} i \sin{\left(\frac{4 \pi}{11} \right)}
z19=222cos(5π11)222isin(5π11)z_{19} = - \sqrt[22]{2} \cos{\left(\frac{5 \pi}{11} \right)} - \sqrt[22]{2} i \sin{\left(\frac{5 \pi}{11} \right)}
z20=222cos(5π11)+222isin(5π11)z_{20} = - \sqrt[22]{2} \cos{\left(\frac{5 \pi}{11} \right)} + \sqrt[22]{2} i \sin{\left(\frac{5 \pi}{11} \right)}
z21=222cos(5π11)222isin(5π11)z_{21} = \sqrt[22]{2} \cos{\left(\frac{5 \pi}{11} \right)} - \sqrt[22]{2} i \sin{\left(\frac{5 \pi}{11} \right)}
z22=222cos(5π11)+222isin(5π11)z_{22} = \sqrt[22]{2} \cos{\left(\frac{5 \pi}{11} \right)} + \sqrt[22]{2} i \sin{\left(\frac{5 \pi}{11} \right)}
делаем обратную замену
z=wz = w
w=zw = z

Тогда, окончательный ответ:
w1=222w_{1} = - \sqrt[22]{2}
w2=222w_{2} = \sqrt[22]{2}
w3=222cos(π11)222isin(π11)w_{3} = - \sqrt[22]{2} \cos{\left(\frac{\pi}{11} \right)} - \sqrt[22]{2} i \sin{\left(\frac{\pi}{11} \right)}
w4=222cos(π11)+222isin(π11)w_{4} = - \sqrt[22]{2} \cos{\left(\frac{\pi}{11} \right)} + \sqrt[22]{2} i \sin{\left(\frac{\pi}{11} \right)}
w5=222cos(π11)222isin(π11)w_{5} = \sqrt[22]{2} \cos{\left(\frac{\pi}{11} \right)} - \sqrt[22]{2} i \sin{\left(\frac{\pi}{11} \right)}
w6=222cos(π11)+222isin(π11)w_{6} = \sqrt[22]{2} \cos{\left(\frac{\pi}{11} \right)} + \sqrt[22]{2} i \sin{\left(\frac{\pi}{11} \right)}
w7=222cos(2π11)222isin(2π11)w_{7} = - \sqrt[22]{2} \cos{\left(\frac{2 \pi}{11} \right)} - \sqrt[22]{2} i \sin{\left(\frac{2 \pi}{11} \right)}
w8=222cos(2π11)+222isin(2π11)w_{8} = - \sqrt[22]{2} \cos{\left(\frac{2 \pi}{11} \right)} + \sqrt[22]{2} i \sin{\left(\frac{2 \pi}{11} \right)}
w9=222cos(2π11)222isin(2π11)w_{9} = \sqrt[22]{2} \cos{\left(\frac{2 \pi}{11} \right)} - \sqrt[22]{2} i \sin{\left(\frac{2 \pi}{11} \right)}
w10=222cos(2π11)+222isin(2π11)w_{10} = \sqrt[22]{2} \cos{\left(\frac{2 \pi}{11} \right)} + \sqrt[22]{2} i \sin{\left(\frac{2 \pi}{11} \right)}
w11=222cos(3π11)222isin(3π11)w_{11} = - \sqrt[22]{2} \cos{\left(\frac{3 \pi}{11} \right)} - \sqrt[22]{2} i \sin{\left(\frac{3 \pi}{11} \right)}
w12=222cos(3π11)+222isin(3π11)w_{12} = - \sqrt[22]{2} \cos{\left(\frac{3 \pi}{11} \right)} + \sqrt[22]{2} i \sin{\left(\frac{3 \pi}{11} \right)}
w13=222cos(3π11)222isin(3π11)w_{13} = \sqrt[22]{2} \cos{\left(\frac{3 \pi}{11} \right)} - \sqrt[22]{2} i \sin{\left(\frac{3 \pi}{11} \right)}
w14=222cos(3π11)+222isin(3π11)w_{14} = \sqrt[22]{2} \cos{\left(\frac{3 \pi}{11} \right)} + \sqrt[22]{2} i \sin{\left(\frac{3 \pi}{11} \right)}
w15=222cos(4π11)222isin(4π11)w_{15} = - \sqrt[22]{2} \cos{\left(\frac{4 \pi}{11} \right)} - \sqrt[22]{2} i \sin{\left(\frac{4 \pi}{11} \right)}
w16=222cos(4π11)+222isin(4π11)w_{16} = - \sqrt[22]{2} \cos{\left(\frac{4 \pi}{11} \right)} + \sqrt[22]{2} i \sin{\left(\frac{4 \pi}{11} \right)}
w17=222cos(4π11)222isin(4π11)w_{17} = \sqrt[22]{2} \cos{\left(\frac{4 \pi}{11} \right)} - \sqrt[22]{2} i \sin{\left(\frac{4 \pi}{11} \right)}
w18=222cos(4π11)+222isin(4π11)w_{18} = \sqrt[22]{2} \cos{\left(\frac{4 \pi}{11} \right)} + \sqrt[22]{2} i \sin{\left(\frac{4 \pi}{11} \right)}
w19=222cos(5π11)222isin(5π11)w_{19} = - \sqrt[22]{2} \cos{\left(\frac{5 \pi}{11} \right)} - \sqrt[22]{2} i \sin{\left(\frac{5 \pi}{11} \right)}
w20=222cos(5π11)+222isin(5π11)w_{20} = - \sqrt[22]{2} \cos{\left(\frac{5 \pi}{11} \right)} + \sqrt[22]{2} i \sin{\left(\frac{5 \pi}{11} \right)}
w21=222cos(5π11)222isin(5π11)w_{21} = \sqrt[22]{2} \cos{\left(\frac{5 \pi}{11} \right)} - \sqrt[22]{2} i \sin{\left(\frac{5 \pi}{11} \right)}
w22=222cos(5π11)+222isin(5π11)w_{22} = \sqrt[22]{2} \cos{\left(\frac{5 \pi}{11} \right)} + \sqrt[22]{2} i \sin{\left(\frac{5 \pi}{11} \right)}
делаем обратную замену
cos(x)=w\cos{\left(x \right)} = w
cos(x)=w\cos{\left(x \right)} = w
- это простейшее тригонометрическое уравнение
Это уравнение преобразуется в
x=2πn+acos(w)x = 2 \pi n + \operatorname{acos}{\left(w \right)}
x=2πn+acos(w)πx = 2 \pi n + \operatorname{acos}{\left(w \right)} - \pi
Или
x=2πn+acos(w)x = 2 \pi n + \operatorname{acos}{\left(w \right)}
x=2πn+acos(w)πx = 2 \pi n + \operatorname{acos}{\left(w \right)} - \pi
, где n - любое целое число
подставляем w:
x1=2πn+acos(w1)x_{1} = 2 \pi n + \operatorname{acos}{\left(w_{1} \right)}
x1=2πn+acos(222)x_{1} = 2 \pi n + \operatorname{acos}{\left(\sqrt[22]{2} \right)}
x1=2πn+acos(222)x_{1} = 2 \pi n + \operatorname{acos}{\left(\sqrt[22]{2} \right)}
x2=2πn+acos(w2)x_{2} = 2 \pi n + \operatorname{acos}{\left(w_{2} \right)}
x2=2πn+acos(222)x_{2} = 2 \pi n + \operatorname{acos}{\left(- \sqrt[22]{2} \right)}
x2=2πn+acos(222)x_{2} = 2 \pi n + \operatorname{acos}{\left(- \sqrt[22]{2} \right)}
x3=2πn+acos(w1)πx_{3} = 2 \pi n + \operatorname{acos}{\left(w_{1} \right)} - \pi
x3=2πnπ+acos(222)x_{3} = 2 \pi n - \pi + \operatorname{acos}{\left(\sqrt[22]{2} \right)}
x3=2πnπ+acos(222)x_{3} = 2 \pi n - \pi + \operatorname{acos}{\left(\sqrt[22]{2} \right)}
x4=2πn+acos(w2)πx_{4} = 2 \pi n + \operatorname{acos}{\left(w_{2} \right)} - \pi
x4=2πnπ+acos(222)x_{4} = 2 \pi n - \pi + \operatorname{acos}{\left(- \sqrt[22]{2} \right)}
x4=2πnπ+acos(222)x_{4} = 2 \pi n - \pi + \operatorname{acos}{\left(- \sqrt[22]{2} \right)}
График
0-80-60-40-2020406080-10010004
Быстрый ответ [src]
          /    / 22___\\              /    / 22___\\
x_1 = - re\acos\-\/ 2 // + 2*pi - I*im\acos\-\/ 2 //
x1=re(acos(222))+2πiim(acos(222))x_{1} = - \operatorname{re}{\left(\operatorname{acos}{\left(- \sqrt[22]{2} \right)}\right)} + 2 \pi - i \operatorname{im}{\left(\operatorname{acos}{\left(- \sqrt[22]{2} \right)}\right)}
                 /    /22___\\
x_2 = 2*pi - I*im\acos\\/ 2 //
x2=2πiim(acos(222))x_{2} = 2 \pi - i \operatorname{im}{\left(\operatorname{acos}{\left(\sqrt[22]{2} \right)}\right)}
          /    / 11____ 22___\\              /    / 11____ 22___\\
x_3 = - re\acos\-\/ -1 *\/ 2 // + 2*pi - I*im\acos\-\/ -1 *\/ 2 //
x3=re(acos(111222))+2πiim(acos(111222))x_{3} = - \operatorname{re}{\left(\operatorname{acos}{\left(- \sqrt[11]{-1} \cdot \sqrt[22]{2} \right)}\right)} + 2 \pi - i \operatorname{im}{\left(\operatorname{acos}{\left(- \sqrt[11]{-1} \cdot \sqrt[22]{2} \right)}\right)}
          /     /    9/22 22___\\   3*pi       /     /    9/22 22___\\
x_4 = - im\asinh\(-1)    *\/ 2 // + ---- + I*re\asinh\(-1)    *\/ 2 //
                                     2                                
x4=im(asinh((1)922222))+3π2+ire(asinh((1)922222))x_{4} = - \operatorname{im}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{9}{22}} \cdot \sqrt[22]{2} \right)}\right)} + \frac{3 \pi}{2} + i \operatorname{re}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{9}{22}} \cdot \sqrt[22]{2} \right)}\right)}
      3*pi       /     /    9/22 22___\\     /     /    9/22 22___\\
x_5 = ---- - I*re\asinh\(-1)    *\/ 2 // + im\asinh\(-1)    *\/ 2 //
       2                                                            
x5=im(asinh((1)922222))+3π2ire(asinh((1)922222))x_{5} = \operatorname{im}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{9}{22}} \cdot \sqrt[22]{2} \right)}\right)} + \frac{3 \pi}{2} - i \operatorname{re}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{9}{22}} \cdot \sqrt[22]{2} \right)}\right)}
          /    /11____ 22___\\              /    /11____ 22___\\
x_6 = - re\acos\\/ -1 *\/ 2 // + 2*pi - I*im\acos\\/ -1 *\/ 2 //
x6=re(acos(111222))+2πiim(acos(111222))x_{6} = - \operatorname{re}{\left(\operatorname{acos}{\left(\sqrt[11]{-1} \cdot \sqrt[22]{2} \right)}\right)} + 2 \pi - i \operatorname{im}{\left(\operatorname{acos}{\left(\sqrt[11]{-1} \cdot \sqrt[22]{2} \right)}\right)}
          /    /     2/11 22___\\              /    /     2/11 22___\\
x_7 = - re\acos\-(-1)    *\/ 2 // + 2*pi - I*im\acos\-(-1)    *\/ 2 //
x7=re(acos((1)211222))+2πiim(acos((1)211222))x_{7} = - \operatorname{re}{\left(\operatorname{acos}{\left(- \left(-1\right)^{\frac{2}{11}} \cdot \sqrt[22]{2} \right)}\right)} + 2 \pi - i \operatorname{im}{\left(\operatorname{acos}{\left(- \left(-1\right)^{\frac{2}{11}} \cdot \sqrt[22]{2} \right)}\right)}
          /     /    7/22 22___\\   3*pi       /     /    7/22 22___\\
x_8 = - im\asinh\(-1)    *\/ 2 // + ---- + I*re\asinh\(-1)    *\/ 2 //
                                     2                                
x8=im(asinh((1)722222))+3π2+ire(asinh((1)722222))x_{8} = - \operatorname{im}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{7}{22}} \cdot \sqrt[22]{2} \right)}\right)} + \frac{3 \pi}{2} + i \operatorname{re}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{7}{22}} \cdot \sqrt[22]{2} \right)}\right)}
      3*pi       /     /    7/22 22___\\     /     /    7/22 22___\\
x_9 = ---- - I*re\asinh\(-1)    *\/ 2 // + im\asinh\(-1)    *\/ 2 //
       2                                                            
x9=im(asinh((1)722222))+3π2ire(asinh((1)722222))x_{9} = \operatorname{im}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{7}{22}} \cdot \sqrt[22]{2} \right)}\right)} + \frac{3 \pi}{2} - i \operatorname{re}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{7}{22}} \cdot \sqrt[22]{2} \right)}\right)}
           /    /    2/11 22___\\              /    /    2/11 22___\\
x_10 = - re\acos\(-1)    *\/ 2 // + 2*pi - I*im\acos\(-1)    *\/ 2 //
x10=re(acos((1)211222))+2πiim(acos((1)211222))x_{10} = - \operatorname{re}{\left(\operatorname{acos}{\left(\left(-1\right)^{\frac{2}{11}} \cdot \sqrt[22]{2} \right)}\right)} + 2 \pi - i \operatorname{im}{\left(\operatorname{acos}{\left(\left(-1\right)^{\frac{2}{11}} \cdot \sqrt[22]{2} \right)}\right)}
           /    / 22___ /     /5*pi\      /5*pi\\\\              /    / 22___ /     /5*pi\      /5*pi\\\\
x_11 = - re|acos|-\/ 2 *|I*cos|----| + sin|----|||| + 2*pi - I*im|acos|-\/ 2 *|I*cos|----| + sin|----||||
           \    \       \     \ 22 /      \ 22 ////              \    \       \     \ 22 /      \ 22 ////
x11=re(acos(222(sin(5π22)+icos(5π22))))+2πiim(acos(222(sin(5π22)+icos(5π22))))x_{11} = - \operatorname{re}{\left(\operatorname{acos}{\left(- \sqrt[22]{2} \left(\sin{\left(\frac{5 \pi}{22} \right)} + i \cos{\left(\frac{5 \pi}{22} \right)}\right) \right)}\right)} + 2 \pi - i \operatorname{im}{\left(\operatorname{acos}{\left(- \sqrt[22]{2} \left(\sin{\left(\frac{5 \pi}{22} \right)} + i \cos{\left(\frac{5 \pi}{22} \right)}\right) \right)}\right)}
           /     /    5/22 22___\\   3*pi       /     /    5/22 22___\\
x_12 = - im\asinh\(-1)    *\/ 2 // + ---- + I*re\asinh\(-1)    *\/ 2 //
                                      2                                
x12=im(asinh((1)522222))+3π2+ire(asinh((1)522222))x_{12} = - \operatorname{im}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{5}{22}} \cdot \sqrt[22]{2} \right)}\right)} + \frac{3 \pi}{2} + i \operatorname{re}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{5}{22}} \cdot \sqrt[22]{2} \right)}\right)}
       3*pi       /     /    5/22 22___\\     /     /    5/22 22___\\
x_13 = ---- - I*re\asinh\(-1)    *\/ 2 // + im\asinh\(-1)    *\/ 2 //
        2                                                            
x13=im(asinh((1)522222))+3π2ire(asinh((1)522222))x_{13} = \operatorname{im}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{5}{22}} \cdot \sqrt[22]{2} \right)}\right)} + \frac{3 \pi}{2} - i \operatorname{re}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{5}{22}} \cdot \sqrt[22]{2} \right)}\right)}
           /    /    3/11 22___\\              /    /    3/11 22___\\
x_14 = - re\acos\(-1)    *\/ 2 // + 2*pi - I*im\acos\(-1)    *\/ 2 //
x14=re(acos((1)311222))+2πiim(acos((1)311222))x_{14} = - \operatorname{re}{\left(\operatorname{acos}{\left(\left(-1\right)^{\frac{3}{11}} \cdot \sqrt[22]{2} \right)}\right)} + 2 \pi - i \operatorname{im}{\left(\operatorname{acos}{\left(\left(-1\right)^{\frac{3}{11}} \cdot \sqrt[22]{2} \right)}\right)}
           /    / 22___ /     /3*pi\      /3*pi\\\\              /    / 22___ /     /3*pi\      /3*pi\\\\
x_15 = - re|acos|-\/ 2 *|I*cos|----| + sin|----|||| + 2*pi - I*im|acos|-\/ 2 *|I*cos|----| + sin|----||||
           \    \       \     \ 22 /      \ 22 ////              \    \       \     \ 22 /      \ 22 ////
x15=re(acos(222(sin(3π22)+icos(3π22))))+2πiim(acos(222(sin(3π22)+icos(3π22))))x_{15} = - \operatorname{re}{\left(\operatorname{acos}{\left(- \sqrt[22]{2} \left(\sin{\left(\frac{3 \pi}{22} \right)} + i \cos{\left(\frac{3 \pi}{22} \right)}\right) \right)}\right)} + 2 \pi - i \operatorname{im}{\left(\operatorname{acos}{\left(- \sqrt[22]{2} \left(\sin{\left(\frac{3 \pi}{22} \right)} + i \cos{\left(\frac{3 \pi}{22} \right)}\right) \right)}\right)}
           /     /    3/22 22___\\   3*pi       /     /    3/22 22___\\
x_16 = - im\asinh\(-1)    *\/ 2 // + ---- + I*re\asinh\(-1)    *\/ 2 //
                                      2                                
x16=im(asinh((1)322222))+3π2+ire(asinh((1)322222))x_{16} = - \operatorname{im}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{3}{22}} \cdot \sqrt[22]{2} \right)}\right)} + \frac{3 \pi}{2} + i \operatorname{re}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{3}{22}} \cdot \sqrt[22]{2} \right)}\right)}
       3*pi       /     /    3/22 22___\\     /     /    3/22 22___\\
x_17 = ---- - I*re\asinh\(-1)    *\/ 2 // + im\asinh\(-1)    *\/ 2 //
        2                                                            
x17=im(asinh((1)322222))+3π2ire(asinh((1)322222))x_{17} = \operatorname{im}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{3}{22}} \cdot \sqrt[22]{2} \right)}\right)} + \frac{3 \pi}{2} - i \operatorname{re}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{3}{22}} \cdot \sqrt[22]{2} \right)}\right)}
           /    /    4/11 22___\\              /    /    4/11 22___\\
x_18 = - re\acos\(-1)    *\/ 2 // + 2*pi - I*im\acos\(-1)    *\/ 2 //
x18=re(acos((1)411222))+2πiim(acos((1)411222))x_{18} = - \operatorname{re}{\left(\operatorname{acos}{\left(\left(-1\right)^{\frac{4}{11}} \cdot \sqrt[22]{2} \right)}\right)} + 2 \pi - i \operatorname{im}{\left(\operatorname{acos}{\left(\left(-1\right)^{\frac{4}{11}} \cdot \sqrt[22]{2} \right)}\right)}
           /    / 22___ /     /pi\      /pi\\\\              /    / 22___ /     /pi\      /pi\\\\
x_19 = - re|acos|-\/ 2 *|I*cos|--| + sin|--|||| + 2*pi - I*im|acos|-\/ 2 *|I*cos|--| + sin|--||||
           \    \       \     \22/      \22////              \    \       \     \22/      \22////
x19=re(acos(222(sin(π22)+icos(π22))))+2πiim(acos(222(sin(π22)+icos(π22))))x_{19} = - \operatorname{re}{\left(\operatorname{acos}{\left(- \sqrt[22]{2} \left(\sin{\left(\frac{\pi}{22} \right)} + i \cos{\left(\frac{\pi}{22} \right)}\right) \right)}\right)} + 2 \pi - i \operatorname{im}{\left(\operatorname{acos}{\left(- \sqrt[22]{2} \left(\sin{\left(\frac{\pi}{22} \right)} + i \cos{\left(\frac{\pi}{22} \right)}\right) \right)}\right)}
           /    /22___ /     /pi\        /pi\\\\              /    /22___ /     /pi\        /pi\\\\
x_20 = - re|acos|\/ 2 *|- sin|--| + I*cos|--|||| + 2*pi - I*im|acos|\/ 2 *|- sin|--| + I*cos|--||||
           \    \      \     \22/        \22////              \    \      \     \22/        \22////
x20=re(acos(222(sin(π22)+icos(π22))))+2πiim(acos(222(sin(π22)+icos(π22))))x_{20} = - \operatorname{re}{\left(\operatorname{acos}{\left(\sqrt[22]{2} \left(- \sin{\left(\frac{\pi}{22} \right)} + i \cos{\left(\frac{\pi}{22} \right)}\right) \right)}\right)} + 2 \pi - i \operatorname{im}{\left(\operatorname{acos}{\left(\sqrt[22]{2} \left(- \sin{\left(\frac{\pi}{22} \right)} + i \cos{\left(\frac{\pi}{22} \right)}\right) \right)}\right)}
           /    /22___ /       /pi\      /pi\\\\              /    /22___ /       /pi\      /pi\\\\
x_21 = - re|acos|\/ 2 *|- I*cos|--| + sin|--|||| + 2*pi - I*im|acos|\/ 2 *|- I*cos|--| + sin|--||||
           \    \      \       \22/      \22////              \    \      \       \22/      \22////
x21=re(acos(222(sin(π22)icos(π22))))+2πiim(acos(222(sin(π22)icos(π22))))x_{21} = - \operatorname{re}{\left(\operatorname{acos}{\left(\sqrt[22]{2} \left(\sin{\left(\frac{\pi}{22} \right)} - i \cos{\left(\frac{\pi}{22} \right)}\right) \right)}\right)} + 2 \pi - i \operatorname{im}{\left(\operatorname{acos}{\left(\sqrt[22]{2} \left(\sin{\left(\frac{\pi}{22} \right)} - i \cos{\left(\frac{\pi}{22} \right)}\right) \right)}\right)}
           /    /22___ /     /pi\      /pi\\\\              /    /22___ /     /pi\      /pi\\\\
x_22 = - re|acos|\/ 2 *|I*cos|--| + sin|--|||| + 2*pi - I*im|acos|\/ 2 *|I*cos|--| + sin|--||||
           \    \      \     \22/      \22////              \    \      \     \22/      \22////
x22=re(acos(222(sin(π22)+icos(π22))))+2πiim(acos(222(sin(π22)+icos(π22))))x_{22} = - \operatorname{re}{\left(\operatorname{acos}{\left(\sqrt[22]{2} \left(\sin{\left(\frac{\pi}{22} \right)} + i \cos{\left(\frac{\pi}{22} \right)}\right) \right)}\right)} + 2 \pi - i \operatorname{im}{\left(\operatorname{acos}{\left(\sqrt[22]{2} \left(\sin{\left(\frac{\pi}{22} \right)} + i \cos{\left(\frac{\pi}{22} \right)}\right) \right)}\right)}
           /    / 22___\\     /    / 22___\\
x_23 = I*im\acos\-\/ 2 // + re\acos\-\/ 2 //
x23=re(acos(222))+iim(acos(222))x_{23} = \operatorname{re}{\left(\operatorname{acos}{\left(- \sqrt[22]{2} \right)}\right)} + i \operatorname{im}{\left(\operatorname{acos}{\left(- \sqrt[22]{2} \right)}\right)}
           /    /22___\\
x_24 = I*im\acos\\/ 2 //
x24=iim(acos(222))x_{24} = i \operatorname{im}{\left(\operatorname{acos}{\left(\sqrt[22]{2} \right)}\right)}
           /    / 11____ 22___\\     /    / 11____ 22___\\
x_25 = I*im\acos\-\/ -1 *\/ 2 // + re\acos\-\/ -1 *\/ 2 //
x25=re(acos(111222))+iim(acos(111222))x_{25} = \operatorname{re}{\left(\operatorname{acos}{\left(- \sqrt[11]{-1} \cdot \sqrt[22]{2} \right)}\right)} + i \operatorname{im}{\left(\operatorname{acos}{\left(- \sqrt[11]{-1} \cdot \sqrt[22]{2} \right)}\right)}
       pi       /     /    9/22 22___\\     /     /    9/22 22___\\
x_26 = -- - I*re\asinh\(-1)    *\/ 2 // + im\asinh\(-1)    *\/ 2 //
       2                                                           
x26=im(asinh((1)922222))+π2ire(asinh((1)922222))x_{26} = \operatorname{im}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{9}{22}} \cdot \sqrt[22]{2} \right)}\right)} + \frac{\pi}{2} - i \operatorname{re}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{9}{22}} \cdot \sqrt[22]{2} \right)}\right)}
       pi     /     /    9/22 22___\\       /     /    9/22 22___\\
x_27 = -- - im\asinh\(-1)    *\/ 2 // + I*re\asinh\(-1)    *\/ 2 //
       2                                                           
x27=im(asinh((1)922222))+π2+ire(asinh((1)922222))x_{27} = - \operatorname{im}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{9}{22}} \cdot \sqrt[22]{2} \right)}\right)} + \frac{\pi}{2} + i \operatorname{re}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{9}{22}} \cdot \sqrt[22]{2} \right)}\right)}
           /    /11____ 22___\\     /    /11____ 22___\\
x_28 = I*im\acos\\/ -1 *\/ 2 // + re\acos\\/ -1 *\/ 2 //
x28=re(acos(111222))+iim(acos(111222))x_{28} = \operatorname{re}{\left(\operatorname{acos}{\left(\sqrt[11]{-1} \cdot \sqrt[22]{2} \right)}\right)} + i \operatorname{im}{\left(\operatorname{acos}{\left(\sqrt[11]{-1} \cdot \sqrt[22]{2} \right)}\right)}
           /    /     2/11 22___\\     /    /     2/11 22___\\
x_29 = I*im\acos\-(-1)    *\/ 2 // + re\acos\-(-1)    *\/ 2 //
x29=re(acos((1)211222))+iim(acos((1)211222))x_{29} = \operatorname{re}{\left(\operatorname{acos}{\left(- \left(-1\right)^{\frac{2}{11}} \cdot \sqrt[22]{2} \right)}\right)} + i \operatorname{im}{\left(\operatorname{acos}{\left(- \left(-1\right)^{\frac{2}{11}} \cdot \sqrt[22]{2} \right)}\right)}
       pi       /     /    7/22 22___\\     /     /    7/22 22___\\
x_30 = -- - I*re\asinh\(-1)    *\/ 2 // + im\asinh\(-1)    *\/ 2 //
       2                                                           
x30=im(asinh((1)722222))+π2ire(asinh((1)722222))x_{30} = \operatorname{im}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{7}{22}} \cdot \sqrt[22]{2} \right)}\right)} + \frac{\pi}{2} - i \operatorname{re}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{7}{22}} \cdot \sqrt[22]{2} \right)}\right)}
       pi     /     /    7/22 22___\\       /     /    7/22 22___\\
x_31 = -- - im\asinh\(-1)    *\/ 2 // + I*re\asinh\(-1)    *\/ 2 //
       2                                                           
x31=im(asinh((1)722222))+π2+ire(asinh((1)722222))x_{31} = - \operatorname{im}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{7}{22}} \cdot \sqrt[22]{2} \right)}\right)} + \frac{\pi}{2} + i \operatorname{re}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{7}{22}} \cdot \sqrt[22]{2} \right)}\right)}
           /    /    2/11 22___\\     /    /    2/11 22___\\
x_32 = I*im\acos\(-1)    *\/ 2 // + re\acos\(-1)    *\/ 2 //
x32=re(acos((1)211222))+iim(acos((1)211222))x_{32} = \operatorname{re}{\left(\operatorname{acos}{\left(\left(-1\right)^{\frac{2}{11}} \cdot \sqrt[22]{2} \right)}\right)} + i \operatorname{im}{\left(\operatorname{acos}{\left(\left(-1\right)^{\frac{2}{11}} \cdot \sqrt[22]{2} \right)}\right)}
           /    / 22___ /     /5*pi\      /5*pi\\\\     /    / 22___ /     /5*pi\      /5*pi\\\\
x_33 = I*im|acos|-\/ 2 *|I*cos|----| + sin|----|||| + re|acos|-\/ 2 *|I*cos|----| + sin|----||||
           \    \       \     \ 22 /      \ 22 ////     \    \       \     \ 22 /      \ 22 ////
x33=re(acos(222(sin(5π22)+icos(5π22))))+iim(acos(222(sin(5π22)+icos(5π22))))x_{33} = \operatorname{re}{\left(\operatorname{acos}{\left(- \sqrt[22]{2} \left(\sin{\left(\frac{5 \pi}{22} \right)} + i \cos{\left(\frac{5 \pi}{22} \right)}\right) \right)}\right)} + i \operatorname{im}{\left(\operatorname{acos}{\left(- \sqrt[22]{2} \left(\sin{\left(\frac{5 \pi}{22} \right)} + i \cos{\left(\frac{5 \pi}{22} \right)}\right) \right)}\right)}
       pi       /     /    5/22 22___\\     /     /    5/22 22___\\
x_34 = -- - I*re\asinh\(-1)    *\/ 2 // + im\asinh\(-1)    *\/ 2 //
       2                                                           
x34=im(asinh((1)522222))+π2ire(asinh((1)522222))x_{34} = \operatorname{im}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{5}{22}} \cdot \sqrt[22]{2} \right)}\right)} + \frac{\pi}{2} - i \operatorname{re}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{5}{22}} \cdot \sqrt[22]{2} \right)}\right)}
       pi     /     /    5/22 22___\\       /     /    5/22 22___\\
x_35 = -- - im\asinh\(-1)    *\/ 2 // + I*re\asinh\(-1)    *\/ 2 //
       2                                                           
x35=im(asinh((1)522222))+π2+ire(asinh((1)522222))x_{35} = - \operatorname{im}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{5}{22}} \cdot \sqrt[22]{2} \right)}\right)} + \frac{\pi}{2} + i \operatorname{re}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{5}{22}} \cdot \sqrt[22]{2} \right)}\right)}
           /    /    3/11 22___\\     /    /    3/11 22___\\
x_36 = I*im\acos\(-1)    *\/ 2 // + re\acos\(-1)    *\/ 2 //
x36=re(acos((1)311222))+iim(acos((1)311222))x_{36} = \operatorname{re}{\left(\operatorname{acos}{\left(\left(-1\right)^{\frac{3}{11}} \cdot \sqrt[22]{2} \right)}\right)} + i \operatorname{im}{\left(\operatorname{acos}{\left(\left(-1\right)^{\frac{3}{11}} \cdot \sqrt[22]{2} \right)}\right)}
           /    / 22___ /     /3*pi\      /3*pi\\\\     /    / 22___ /     /3*pi\      /3*pi\\\\
x_37 = I*im|acos|-\/ 2 *|I*cos|----| + sin|----|||| + re|acos|-\/ 2 *|I*cos|----| + sin|----||||
           \    \       \     \ 22 /      \ 22 ////     \    \       \     \ 22 /      \ 22 ////
x37=re(acos(222(sin(3π22)+icos(3π22))))+iim(acos(222(sin(3π22)+icos(3π22))))x_{37} = \operatorname{re}{\left(\operatorname{acos}{\left(- \sqrt[22]{2} \left(\sin{\left(\frac{3 \pi}{22} \right)} + i \cos{\left(\frac{3 \pi}{22} \right)}\right) \right)}\right)} + i \operatorname{im}{\left(\operatorname{acos}{\left(- \sqrt[22]{2} \left(\sin{\left(\frac{3 \pi}{22} \right)} + i \cos{\left(\frac{3 \pi}{22} \right)}\right) \right)}\right)}
       pi       /     /    3/22 22___\\     /     /    3/22 22___\\
x_38 = -- - I*re\asinh\(-1)    *\/ 2 // + im\asinh\(-1)    *\/ 2 //
       2                                                           
x38=im(asinh((1)322222))+π2ire(asinh((1)322222))x_{38} = \operatorname{im}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{3}{22}} \cdot \sqrt[22]{2} \right)}\right)} + \frac{\pi}{2} - i \operatorname{re}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{3}{22}} \cdot \sqrt[22]{2} \right)}\right)}
       pi     /     /    3/22 22___\\       /     /    3/22 22___\\
x_39 = -- - im\asinh\(-1)    *\/ 2 // + I*re\asinh\(-1)    *\/ 2 //
       2                                                           
x39=im(asinh((1)322222))+π2+ire(asinh((1)322222))x_{39} = - \operatorname{im}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{3}{22}} \cdot \sqrt[22]{2} \right)}\right)} + \frac{\pi}{2} + i \operatorname{re}{\left(\operatorname{asinh}{\left(\left(-1\right)^{\frac{3}{22}} \cdot \sqrt[22]{2} \right)}\right)}
           /    /    4/11 22___\\     /    /    4/11 22___\\
x_40 = I*im\acos\(-1)    *\/ 2 // + re\acos\(-1)    *\/ 2 //
x40=re(acos((1)411222))+iim(acos((1)411222))x_{40} = \operatorname{re}{\left(\operatorname{acos}{\left(\left(-1\right)^{\frac{4}{11}} \cdot \sqrt[22]{2} \right)}\right)} + i \operatorname{im}{\left(\operatorname{acos}{\left(\left(-1\right)^{\frac{4}{11}} \cdot \sqrt[22]{2} \right)}\right)}
           /    / 22___ /     /pi\      /pi\\\\     /    / 22___ /     /pi\      /pi\\\\
x_41 = I*im|acos|-\/ 2 *|I*cos|--| + sin|--|||| + re|acos|-\/ 2 *|I*cos|--| + sin|--||||
           \    \       \     \22/      \22////     \    \       \     \22/      \22////
x41=re(acos(222(sin(π22)+icos(π22))))+iim(acos(222(sin(π22)+icos(π22))))x_{41} = \operatorname{re}{\left(\operatorname{acos}{\left(- \sqrt[22]{2} \left(\sin{\left(\frac{\pi}{22} \right)} + i \cos{\left(\frac{\pi}{22} \right)}\right) \right)}\right)} + i \operatorname{im}{\left(\operatorname{acos}{\left(- \sqrt[22]{2} \left(\sin{\left(\frac{\pi}{22} \right)} + i \cos{\left(\frac{\pi}{22} \right)}\right) \right)}\right)}
           /    /22___ /     /pi\        /pi\\\\     /    /22___ /     /pi\        /pi\\\\
x_42 = I*im|acos|\/ 2 *|- sin|--| + I*cos|--|||| + re|acos|\/ 2 *|- sin|--| + I*cos|--||||
           \    \      \     \22/        \22////     \    \      \     \22/        \22////
x42=re(acos(222(sin(π22)+icos(π22))))+iim(acos(222(sin(π22)+icos(π22))))x_{42} = \operatorname{re}{\left(\operatorname{acos}{\left(\sqrt[22]{2} \left(- \sin{\left(\frac{\pi}{22} \right)} + i \cos{\left(\frac{\pi}{22} \right)}\right) \right)}\right)} + i \operatorname{im}{\left(\operatorname{acos}{\left(\sqrt[22]{2} \left(- \sin{\left(\frac{\pi}{22} \right)} + i \cos{\left(\frac{\pi}{22} \right)}\right) \right)}\right)}
           /    /22___ /       /pi\      /pi\\\\     /    /22___ /       /pi\      /pi\\\\
x_43 = I*im|acos|\/ 2 *|- I*cos|--| + sin|--|||| + re|acos|\/ 2 *|- I*cos|--| + sin|--||||
           \    \      \       \22/      \22////     \    \      \       \22/      \22////
x43=re(acos(222(sin(π22)icos(π22))))+iim(acos(222(sin(π22)icos(π22))))x_{43} = \operatorname{re}{\left(\operatorname{acos}{\left(\sqrt[22]{2} \left(\sin{\left(\frac{\pi}{22} \right)} - i \cos{\left(\frac{\pi}{22} \right)}\right) \right)}\right)} + i \operatorname{im}{\left(\operatorname{acos}{\left(\sqrt[22]{2} \left(\sin{\left(\frac{\pi}{22} \right)} - i \cos{\left(\frac{\pi}{22} \right)}\right) \right)}\right)}
           /    /22___ /     /pi\      /pi\\\\     /    /22___ /     /pi\      /pi\\\\
x_44 = I*im|acos|\/ 2 *|I*cos|--| + sin|--|||| + re|acos|\/ 2 *|I*cos|--| + sin|--||||
           \    \      \     \22/      \22////     \    \      \     \22/      \22////
x44=re(acos(222(sin(π22)+icos(π22))))+iim(acos(222(sin(π22)+icos(π22))))x_{44} = \operatorname{re}{\left(\operatorname{acos}{\left(\sqrt[22]{2} \left(\sin{\left(\frac{\pi}{22} \right)} + i \cos{\left(\frac{\pi}{22} \right)}\right) \right)}\right)} + i \operatorname{im}{\left(\operatorname{acos}{\left(\sqrt[22]{2} \left(\sin{\left(\frac{\pi}{22} \right)} + i \cos{\left(\frac{\pi}{22} \right)}\right) \right)}\right)}
Численный ответ [src]
x1 = 3.14159265358979 + 0.252344872738505*i
x2 = 6.28318530717959 - 0.252344872738505*i
x3 = 3.67671230635564 - 0.543070659697429*i
x4 = 3.67671230635564 + 0.543070659697429*i
x5 = 5.74806565441374 - 0.543070659697429*i
x6 = 5.74806565441374 + 0.543070659697429*i
x7 = 3.95337526139597 - 0.708304870870651*i
x8 = 3.95337526139597 + 0.708304870870651*i
x9 = 5.47140269937341 - 0.708304870870651*i
x10 = 5.47140269937341 + 0.708304870870651*i
x11 = 4.18659554986285 - 0.810160956958411*i
x12 = 4.18659554986285 + 0.810160956958411*i
x13 = 5.23818241090653 - 0.810160956958411*i
x14 = 5.23818241090653 + 0.810160956958411*i
x15 = 4.40213281384032 - 0.871307698968855*i
x16 = 4.40213281384032 + 0.871307698968855*i
x17 = 5.02264514692906 - 0.871307698968855*i
x18 = 5.02264514692906 + 0.871307698968855*i
x19 = 4.60974375664872 - 0.900273667451323*i
x20 = 4.60974375664872 + 0.900273667451323*i
x21 = 4.81503420412066 - 0.900273667451323*i
x22 = 4.81503420412066 + 0.900273667451323*i
x23 = 3.14159265358979 - 0.252344872738505*i
x24 = 0.252344872738505*i
x25 = 2.60647300082395 + 0.543070659697429*i
x26 = 2.60647300082395 - 0.543070659697429*i
x27 = 0.535119652765845 + 0.543070659697429*i
x28 = 0.535119652765845 - 0.543070659697429*i
x29 = 2.32981004578362 + 0.708304870870651*i
x30 = 2.32981004578362 - 0.708304870870651*i
x31 = 0.811782607806177 + 0.708304870870651*i
x32 = 0.811782607806177 - 0.708304870870651*i
x33 = 2.09658975731674 + 0.810160956958411*i
x34 = 2.09658975731674 - 0.810160956958411*i
x35 = 1.04500289627306 + 0.810160956958411*i
x36 = 1.04500289627306 - 0.810160956958411*i
x37 = 1.88105249333927 + 0.871307698968855*i
x38 = 1.88105249333927 - 0.871307698968855*i
x39 = 1.26054016025052 + 0.871307698968855*i
x40 = 1.26054016025052 - 0.871307698968855*i
x41 = 1.67344155053087 + 0.900273667451323*i
x42 = 1.67344155053087 - 0.900273667451323*i
x43 = 1.46815110305892 + 0.900273667451323*i
x44 = 1.46815110305892 - 0.900273667451323*i
x44 = 1.46815110305892 - 0.900273667451323*i
График
cos^22x=2 уравнение