Найду корень уравнения: cos(x/2) = 0
с изменением знака при 0
x1 = -9591.28237140964
x2 = 34.5575191894877
x3 = -84.8230016469244
x4 = 28.2743338823081
x5 = 9.42477796076938
x6 = -15.707963267949
x7 = -72.2566310325652
x8 = -53.4070751110265
x9 = 84.8230016469244
x10 = 21.9911485751286
x11 = -3.14159265358979
x12 = -160.221225333079
x13 = 3.14159265358979
x14 = -97.3893722612836
x15 = -34.5575191894877
x16 = -65.9734457253857
x17 = -78.5398163397448
x18 = -9.42477796076938
x19 = 47.1238898038469
x20 = -21.9911485751286
x21 = 59.6902604182061
x22 = 97.3893722612836
x23 = 40.8407044966673
x24 = -40.8407044966673
x25 = 78.5398163397448
x26 = -59.6902604182061
x27 = -91.106186954104
x28 = -47.1238898038469
x29 = 72.2566310325652
x30 = -28.2743338823081
x31 = 53.4070751110265
x32 = 15.707963267949
x33 = 65.9734457253857
x34 = 91.106186954104
x35 = 7517042.68028432