Найду корень уравнения: 2tan(x)=0
с изменением знака при 0
Разделим обе части ур-ния на 2
x1 = 34.5575191894877
x2 = 72.2566310325652
x3 = -6.28318530717959
x4 = 47.1238898038469
x5 = -47.1238898038469
x6 = -97.3893722612836
x7 = -25.1327412287183
x8 = -72.2566310325652
x9 = 31.4159265358979
x10 = -9.42477796076938
x11 = 81.6814089933346
x12 = 0.0
x13 = 28.2743338823081
x14 = 43.9822971502571
x15 = 6.28318530717959
x16 = -34.5575191894877
x17 = -75.398223686155
x18 = 53.4070751110265
x19 = 50.2654824574367
x20 = 21.9911485751286
x21 = 56.5486677646163
x22 = -62.8318530717959
x23 = -15.707963267949
x24 = 62.8318530717959
x25 = -69.1150383789755
x26 = -59.6902604182061
x27 = 9.42477796076938
x28 = 37.6991118430775
x29 = 78.5398163397448
x30 = -43.9822971502571
x31 = -28.2743338823081
x32 = -53.4070751110265
x33 = 65.9734457253857
x34 = -50.2654824574367
x35 = -65.9734457253857
x36 = -100.530964914873
x37 = -94.2477796076938
x38 = 87.9645943005142
x39 = 91.106186954104
x40 = -91.106186954104
x41 = -12.5663706143592
x42 = -56.5486677646163
x43 = -18.8495559215388
x44 = 40.8407044966673
x45 = -37.6991118430775
x46 = -40.8407044966673
x47 = 12.5663706143592
x48 = -87.9645943005142
x49 = -21.9911485751286
x50 = 97.3893722612836
x51 = 15.707963267949
x52 = 100.530964914873
x53 = -31.4159265358979
x54 = -3.14159265358979
x55 = 3.14159265358979
x56 = 75.398223686155
x57 = 84.8230016469244
x58 = 18.8495559215388
x59 = 59.6902604182061
x60 = -84.8230016469244
x61 = -78.5398163397448
x62 = 69.1150383789755
x63 = 94.2477796076938
x64 = -81.6814089933346
x65 = 25.1327412287183