Найду корень уравнения: sin(1/2x)=0,2
x1 = -2*asin(1/5) + 2*pi
x2 = 2*asin(1/5)
сумма
0 + -2*asin(1/5) + 2*pi + 2*asin(1/5)
=
2*pi
произведение
1*(-2*asin(1/5) + 2*pi)*2*asin(1/5)
=
4*(pi - asin(1/5))*asin(1/5)
x1 = 88.3673101420949
x2 = 43.5795813086764
x3 = -31.8186423774786
x4 = -19.2522717631194
x5 = -6.68590114876025
x6 = -37.2963960014969
x7 = -12.1636547727785
x8 = 56.1459519230356
x9 = -74.9955078445744
x10 = 25.535457070299
x11 = -62.4291372302152
x12 = -24.7300253871377
x13 = 5.88046946559892
x14 = -87.5618784589335
x15 = -100.128249073293
x16 = 18.4468400799581
x17 = 50.6681982990174
x18 = 75.8009395277357
x19 = 93.8450637661131
x20 = 81.278693151754
x21 = 31.0132106943173
x22 = -44.3850129918378
x23 = -924.03095599698
x24 = -94.6504954492745
x25 = 126.066421985172
x26 = -82.0841248349153
x27 = 1495.80081895032
x28 = -56.9513836061969
x29 = 0.402715841580662
x30 = 63.2345689133765
x31 = 68.7123225373948
x32 = -69.5177542205561
x33 = 169.243287452268
x34 = -49.862766615856
x35 = 38.1018276846582
x36 = 12.9690864559398
x37 = 100.933680756454