Найду корень уравнения: cos(x)=-(3/5)
сумма
-acos(-3/5) + 2*pi + acos(-3/5)
=
2*pi
произведение
-acos(-3/5) + 2*pi * acos(-3/5)
=
(-acos(-3/5) + 2*pi)*acos(-3/5)
x_1 = -acos(-3/5) + 2*pi
x_2 = acos(-3/5)
x1 = 48.0511850218485
x2 = 27.3470386643065
x3 = -60.6175556362077
x4 = -29.2016291003098
x5 = -39.9134092786657
x6 = 92.0334821721056
x7 = 21.0638533571269
x8 = -77.6125211217432
x9 = -71.3293358145636
x10 = -65.046150507384
x11 = 73.1839262505669
x12 = -33.6302239714861
x13 = -14.7806680499474
x14 = -52.4797798930249
x15 = -48.0511850218485
x16 = -10.352073178771
x17 = 46.1965945858453
x18 = 52.4797798930249
x19 = 71.3293358145636
x20 = 66.9007409433873
x21 = 58.7629652002045
x22 = -85.750296864926
x23 = -98.3166674792852
x24 = -92.0334821721056
x25 = 14.7806680499474
x26 = -4.06888787159141
x27 = 16.6352584859506
x28 = 2.21429743558818
x29 = -27.3470386643065
x30 = -35.4848144074893
x31 = -46.1965945858453
x32 = -8.49748274276777
x33 = 83.8957064289228
x34 = -83.8957064289228
x35 = -79.4671115577464
x36 = -73.1839262505669
x37 = -66.9007409433873
x38 = 8.49748274276777
x39 = 85.750296864926
x40 = 33.6302239714861
x41 = 10.352073178771
x42 = 79.4671115577464
x43 = -58.7629652002045
x44 = -16.6352584859506
x45 = -21.0638533571269
x46 = -22.9184437931302
x47 = 29.2016291003098
x48 = -2.21429743558818
x49 = 39.9134092786657
x50 = 98.3166674792852
x51 = 96.462077043282
x52 = 54.3343703290281
x53 = 4.06888787159141
x54 = -8679.2932066506
x55 = 35.4848144074893
x56 = 65.046150507384
x57 = 77.6125211217432
x58 = -41.7679997146689
x59 = -54.3343703290281
x60 = 60.6175556362077
x61 = 41.7679997146689
x62 = 22.9184437931302
x63 = -90.1788917361024
x64 = -96.462077043282
x65 = 90.1788917361024