Найду корень уравнения: cos(x) =1/2
pi x1 = -- 3
5*pi x2 = ---- 3
x1 = -5.23598775598299
x2 = -1.0471975511966
x3 = -99.4837673636768
x4 = 45.0294947014537
x5 = -95.2949771588904
x6 = -63.8790506229925
x7 = 11.5191730631626
x8 = -36.6519142918809
x9 = -80.634211442138
x10 = 30.3687289847013
x11 = -82.7286065445312
x12 = -86.9173967493176
x13 = -51.3126800086333
x14 = 55.5014702134197
x15 = 76.4454212373516
x16 = -61.7846555205993
x17 = 70.162235930172
x18 = 61.7846555205993
x19 = 17.8023583703422
x20 = -32.4631240870945
x21 = 82.7286065445312
x22 = -93.2005820564972
x23 = 19.8967534727354
x24 = -70.162235930172
x25 = -17.8023583703422
x26 = -68.0678408277789
x27 = 7.33038285837618
x28 = -7.33038285837618
x29 = 49.2182849062401
x30 = -38.7463093942741
x31 = -76.4454212373516
x32 = -13.6135681655558
x33 = 38.7463093942741
x34 = -49.2182849062401
x35 = 68.0678408277789
x36 = 26.1799387799149
x37 = 5.23598775598299
x38 = 99.4837673636768
x39 = -55.5014702134197
x40 = -30.3687289847013
x41 = -225.147473507269
x42 = 42.9350995990605
x43 = 36.6519142918809
x44 = -359.188760060433
x45 = 1.0471975511966
x46 = -74.3510261349584
x47 = -57.5958653158129
x48 = -89.0117918517108
x49 = 24.0855436775217
x50 = 74.3510261349584
x51 = 57.5958653158129
x52 = -24.0855436775217
x53 = 86.9173967493176
x54 = 63.8790506229925
x55 = 80.634211442138
x56 = 1651.43053823704
x57 = -26.1799387799149
x58 = 32.4631240870945
x59 = 13.6135681655558
x60 = -45.0294947014537
x61 = 93.2005820564972
x62 = -11.5191730631626
x63 = 89.0117918517108
x64 = -19.8967534727354
x65 = 51.3126800086333
x66 = -42.9350995990605
x67 = 95.2949771588904