Introduction - If you have any usage issues, please Google them yourself
original title : the preparation of a subroutine NewTon (x0 float, float eps, float x1). Its function is to use Newton's iterative method for f (x) = x* x* x-2x 4x* x 1 x = 0 in the vicinity of a real roots. If successful iteration, the returned value fees 0; Otherwise, the return 0.