牛顿迭代法解非线性方程，可自定义迭代步数和迭代精度，结果可返回解得所有迭代过程，适合于就算方法的初学者作为上机实验的参考资料。-Newton iterative method for solving nonlinear equations, can be customized and iterative precision iterations, the result can be returned to solve for all the iterative process, even if the method is suitable for beginners as a reference experiment on the computer.