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10cos²x+3cosx=1

10cos²x+3cosx=1 уравнение

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Численное решение:

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Решение

Вы ввели [src]
      2                  
10*cos (x) + 3*cos(x) = 1
$$10 \cos^{2}{\left(x \right)} + 3 \cos{\left(x \right)} = 1$$
График
Сумма и произведение корней [src]
сумма
2*pi   4*pi                                
---- + ---- + -acos(1/5) + 2*pi + acos(1/5)
 3      3                                  
$$\left(\frac{2 \pi}{3}\right) + \left(\frac{4 \pi}{3}\right) + \left(- \operatorname{acos}{\left(\frac{1}{5} \right)} + 2 \pi\right) + \left(\operatorname{acos}{\left(\frac{1}{5} \right)}\right)$$
=
4*pi
$$4 \pi$$
произведение
2*pi   4*pi                                
---- * ---- * -acos(1/5) + 2*pi * acos(1/5)
 3      3                                  
$$\left(\frac{2 \pi}{3}\right) * \left(\frac{4 \pi}{3}\right) * \left(- \operatorname{acos}{\left(\frac{1}{5} \right)} + 2 \pi\right) * \left(\operatorname{acos}{\left(\frac{1}{5} \right)}\right)$$
=
    2                              
8*pi *(-acos(1/5) + 2*pi)*acos(1/5)
-----------------------------------
                 9                 
$$\frac{8 \pi^{2} \left(- \operatorname{acos}{\left(\frac{1}{5} \right)} + 2 \pi\right) \operatorname{acos}{\left(\frac{1}{5} \right)}}{9}$$
Быстрый ответ [src]
      2*pi
x_1 = ----
       3  
$$x_{1} = \frac{2 \pi}{3}$$
      4*pi
x_2 = ----
       3  
$$x_{2} = \frac{4 \pi}{3}$$
x_3 = -acos(1/5) + 2*pi
$$x_{3} = - \operatorname{acos}{\left(\frac{1}{5} \right)} + 2 \pi$$
x_4 = acos(1/5)
$$x_{4} = \operatorname{acos}{\left(\frac{1}{5} \right)}$$
Численный ответ [src]
x1 = -33.5103216382911
x2 = -2.0943951023932
x3 = -92.8783412016892
x4 = -83.7758040957278
x5 = 67.7455999729709
x6 = -4.18879020478639
x7 = 39.7935069454707
x8 = -10.471975511966
x9 = -55.1792293586117
x10 = 13.9358090203637
x11 = 4.18879020478639
x12 = 30.0464881298934
x13 = 80.3119705873301
x14 = -85.870199198121
x15 = -39.7935069454707
x16 = 83.7758040957278
x17 = 85.870199198121
x18 = 17.4801175155342
x19 = 46.0766922526503
x20 = -67.7455999729709
x21 = 39.0685502490821
x22 = -4.91374690117502
x23 = -64.2012914778004
x24 = 52.3598775598299
x25 = -57.9181061706208
x26 = 83.0508473993392
x27 = 45.3517355562617
x28 = 16.7551608191456
x29 = -77.4926187885482
x30 = -13.9358090203637
x31 = 42.6128587442525
x32 = 4.91374690117502
x33 = -26.5021796347229
x34 = 41.8879020478639
x35 = 64.2012914778004
x36 = -104.71975511966
x37 = 7.65262371318415
x38 = -61.4624146657913
x39 = 20.2189943275433
x40 = -74.0287852801505
x41 = 397.210112758319
x42 = -20.2189943275433
x43 = -39.0685502490821
x44 = -17.4801175155342
x45 = -99.1615265088688
x46 = -32.7853649419025
x47 = 92.1533845053006
x48 = 99.1615265088688
x49 = -46.0766922526503
x50 = -95.6172180136984
x51 = -48.1710873550435
x52 = 10.471975511966
x53 = 96.342174710087
x54 = 98.4365698124802
x55 = 55.1792293586117
x56 = 76.7676620921596
x57 = 77.4926187885482
x58 = 2.0943951023932
x59 = -54.4542726622231
x60 = -11.1969322083546
x61 = -90.0589894029074
x62 = -7.65262371318415
x63 = 57.9181061706208
x64 = -41.8879020478639
x65 = -35.6047167406843
x66 = 54.4542726622231
x67 = -79.5870138909414
x68 = -98.4365698124802
x69 = 70.48447678498
x70 = 48.1710873550435
x71 = -23.7633028227138
x72 = -27.2271363311115
x73 = -71.2094334813686
x74 = 26.5021796347229
x75 = -51.6349208634413
x76 = -30.0464881298934
x77 = 61.4624146657913
x78 = 32.7853649419025
x79 = -70.48447678498
x80 = -86.5951558945096
x81 = 60.7374579694027
x82 = -48.8960440514321
x83 = 33.5103216382911
x84 = 174.559750195024
x85 = 8.37758040957278
x86 = 74.0287852801505
x87 = 90.0589894029074
x88 = 23.7633028227138
x89 = 11.1969322083546
x90 = -76.7676620921596
x91 = -92.1533845053006
x92 = 36.329673437073
x92 = 36.329673437073
График
10cos²x+3cosx=1 уравнение