cosx9=−1
Найду корень уравнения: cosx9=−1
Разделим обе части ур-ния на 9
x1 = -acos(-1/9) + 2*pi
x2 = acos(-1/9)
сумма
-acos(-1/9) + 2*pi + acos(-1/9)
=
2*pi
произведение
(-acos(-1/9) + 2*pi)*acos(-1/9)
=
(-acos(-1/9) + 2*pi)*acos(-1/9)
x1 = 51.9476197985726
x2 = -95.9299169488297
x3 = -70.7971757201113
x4 = -17.1674185804029
x5 = 83.3635463344705
x6 = 39.3812491842134
x7 = 86.2824569593784
x8 = 89.6467316416501
x9 = -67.4329010378396
x10 = 98.8488275737375
x11 = -23.4506038875825
x12 = 77.0803610272909
x13 = 95.9299169488297
x14 = -454.071479458066
x15 = 108.496287563189
x16 = -331.326683939382
x17 = 61.14971573066
x18 = -1.68213734113586
x19 = -26.8148785698542
x20 = -92.5656422665579
x21 = 33.0980638770338
x22 = -73.7160863450192
x23 = -29.7337891947621
x24 = -48.5833451163008
x25 = -4.60104796604373
x26 = -64.5139904129317
x27 = 48.5833451163008
x28 = -39.3812491842134
x29 = 42.3001598091212
x30 = -42.3001598091212
x31 = 64.5139904129317
x32 = 67.4329010378396
x33 = 1.68213734113586
x34 = 92.5656422665579
x35 = 17.1674185804029
x36 = 23.4506038875825
x37 = -10.8842332732233
x38 = -14.248507955495
x39 = -51.9476197985726
x40 = 4.60104796604373
x41 = -86.2824569593784
x42 = 10.8842332732233
x43 = 45.664434491393
x44 = 73.7160863450192
x45 = 26.8148785698542
x46 = -333051.121440327
x47 = 79.9992716521988
x48 = 29.7337891947621
x49 = -77.0803610272909
x50 = 36.0169745019417
x51 = -54.8665304234804
x52 = -61.14971573066
x53 = -20.5316932626746
x54 = -45.664434491393
x55 = 7.96532264831545
x56 = -36.0169745019417
x57 = 14.248507955495
x58 = -7.96532264831545
x59 = 6787.52226909509
x60 = -215.310437785242
x61 = 20.5316932626746
x62 = -98.8488275737375
x63 = -89.6467316416501
x64 = 70.7971757201113
x65 = -83.3635463344705
x66 = 58.2308051057521
x67 = -79.9992716521988
x68 = -58.2308051057521
x69 = -33.0980638770338
x70 = 54.8665304234804