Найду корень уравнения: cot(-x/7)=1
-w = 1
w = 1 / (-1)
сумма
7*pi 0 - ---- 4
=
-7*pi ----- 4
произведение
-7*pi 1*----- 4
=
-7*pi ----- 4
x1 = -49.4800842940392
x2 = 38.484510006475
x3 = 16.4933614313464
x4 = -27.4889357189107
x5 = -5.49778714378214
x6 = -93.4623814442964
x7 = 60.4756585816035
x8 = -71.4712328691678
x9 = 82.4668071567321
x10 = 104.457955731861