采用牛顿法解非线性方程阻，注意：该程序并非通用程序，但具备牛顿法编程的所有步骤及函数，对编写牛顿法的人有参考价值-Using Newton' s method for solving nonlinear equations resistance, Note: This program is not a common procedure, but with Newton' s method of programming all of the steps and functions, N