Господин Экзамен

Другие калькуляторы


(4*cos(2*x)-9*sin(x)-4)*(log(-cos(x))/log(4))=0

(4*cos(2*x)-9*sin(x)-4)*(log(-cos(x))/log(4))=0 уравнение

С верным решением ты станешь самым любимым в группе❤️😊

v

Численное решение:

Искать численное решение на промежутке [, ]

Решение

Вы ввели [src]
(4*cos(2*x) - 9*sin(x) - 4)*log(-cos(x))    
---------------------------------------- = 0
                 log(4)                     
$$\frac{\left(- 9 \sin{\left(x \right)} + 4 \cos{\left(2 x \right)} - 4\right) \log{\left(- \cos{\left(x \right)} \right)}}{\log{\left(4 \right)}} = 0$$
График
Сумма и произведение корней [src]
сумма
           pi        /    8     \     pi        /    8     \
0 + pi + - -- + I*log|----------| + - -- + I*log|----------|
           2         |      ____|     2         |      ____|
                     \9 - \/ 17 /               \9 + \/ 17 /
$$\left(0\right) + \left(\pi\right) + \left(- \frac{\pi}{2} + i \log{\left(\frac{8}{- \sqrt{17} + 9} \right)}\right) + \left(- \frac{\pi}{2} + i \log{\left(\frac{8}{\sqrt{17} + 9} \right)}\right)$$
=
     /    8     \        /    8     \
I*log|----------| + I*log|----------|
     |      ____|        |      ____|
     \9 + \/ 17 /        \9 - \/ 17 /
$$i \log{\left(\frac{8}{\sqrt{17} + 9} \right)} + i \log{\left(\frac{8}{- \sqrt{17} + 9} \right)}$$
произведение
           pi        /    8     \     pi        /    8     \
0 * pi * - -- + I*log|----------| * - -- + I*log|----------|
           2         |      ____|     2         |      ____|
                     \9 - \/ 17 /               \9 + \/ 17 /
$$\left(0\right) * \left(\pi\right) * \left(- \frac{\pi}{2} + i \log{\left(\frac{8}{- \sqrt{17} + 9} \right)}\right) * \left(- \frac{\pi}{2} + i \log{\left(\frac{8}{\sqrt{17} + 9} \right)}\right)$$
=
0
$$0$$
Быстрый ответ [src]
x_1 = 0
$$x_{1} = 0$$
x_2 = pi
$$x_{2} = \pi$$
        pi        /    8     \
x_3 = - -- + I*log|----------|
        2         |      ____|
                  \9 - \/ 17 /
$$x_{3} = - \frac{\pi}{2} + i \log{\left(\frac{8}{- \sqrt{17} + 9} \right)}$$
        pi        /    8     \
x_4 = - -- + I*log|----------|
        2         |      ____|
                  \9 + \/ 17 /
$$x_{4} = - \frac{\pi}{2} + i \log{\left(\frac{8}{\sqrt{17} + 9} \right)}$$
Численный ответ [src]
x1 = -37.6991118430775
x2 = -65.9734547500033
x3 = 98.9601685880785 - 0.494932923094527*i
x4 = -100.530964914873
x5 = -26.7035375555132 + 0.494932923094527*i
x6 = -12.5663706143592
x7 = 81.6814089933346
x8 = 47.123954571834
x9 = 6.28318530717959
x10 = -43.9822971502571
x11 = 3.14165985848642
x12 = 23.5619449019235 - 0.494932923094527*i
x13 = -56.5486677646163
x14 = -28.2742736622651
x15 = 37.6991118430775
x16 = 29.845130209103 - 0.494932923094527*i
x17 = 65.9734546779902
x18 = 91.1062493303356
x19 = 15.7080257745707
x20 = 54.9778714378214 - 0.494932923094527*i
x21 = -64.4026493985908 - 0.494932923094527*i
x22 = 43.9822971502571
x23 = -20.4203522483337 - 0.494932923094527*i
x24 = -51.8362787842316 - 0.494932923094527*i
x25 = -40.8406349144251
x26 = -6.28318530717959
x27 = 75.398223686155
x28 = 72.2566292904768
x29 = -70.6858347057703 - 0.494932923094527*i
x30 = 69.1150383789755
x31 = -62.8318530717959
x32 = 94.2477796076938
x33 = 36.1283155162826 - 0.494932923094527*i
x34 = -21.9911516507526
x35 = 73.8274273593601 - 0.494932923094527*i
x36 = -94.2477796076938
x37 = 31.4159265358979
x38 = -81.6814089933346
x39 = -72.2565732281109
x40 = -18.8495559215388
x41 = 17.2787595947439 + 0.494932923094527*i
x42 = -84.8229298188485
x43 = 21.991151628381
x44 = 87.9645943005142
x45 = 59.6903250868673
x46 = -58.1194640914112 - 0.494932923094527*i
x47 = 67.5442420521806 - 0.494932923094527*i
x48 = 25.1327412287183
x49 = 28.2743274615242
x50 = 0.0
x51 = -15.7079743811629
x52 = 50.2654824574367
x53 = -7.85398163397448 - 0.494932923094527*i
x54 = 80.1106126665397 - 0.494932923094527*i
x55 = -14.1371669411541 - 0.494932923094527*i
x56 = -50.2654824574367
x57 = -59.6902762206901
x58 = -87.9645943005142
x59 = 61.261056745001 - 0.494932923094527*i
x59 = 61.261056745001 - 0.494932923094527*i
График
(4*cos(2*x)-9*sin(x)-4)*(log(-cos(x))/log(4))=0 уравнение