Найду корень уравнения: 6*x^3+86*x+80=0
__________________ / __________________ \ 3 / ________ | ___ 3 / ________ ___ | 43 \/ 180 + \/ 111907 |\/ 3 *\/ 180 + \/ 111907 43*\/ 3 | x1 = - ----------------------- + --------------------- + I*|--------------------------- + -----------------------| __________________ 6 | 6 __________________| 3 / ________ | 3 / ________ | 6*\/ 180 + \/ 111907 \ 6*\/ 180 + \/ 111907 /
__________________ / __________________\ 3 / ________ | ___ ___ 3 / ________ | 43 \/ 180 + \/ 111907 | 43*\/ 3 \/ 3 *\/ 180 + \/ 111907 | x2 = - ----------------------- + --------------------- + I*|- ----------------------- - ---------------------------| __________________ 6 | __________________ 6 | 3 / ________ | 3 / ________ | 6*\/ 180 + \/ 111907 \ 6*\/ 180 + \/ 111907 /
__________________ 3 / ________ \/ 180 + \/ 111907 43 x3 = - --------------------- + ----------------------- 3 __________________ 3 / ________ 3*\/ 180 + \/ 111907
x1 = 0.441156119111 - 3.86227776029*i
x2 = 0.441156119111 + 3.86227776029*i
x3 = -0.882312238222000