说明：  完整的以最速下降法，牛顿迭代法，二分法求解非线性方程的Matlab程序源代码，含GUI界面，简洁明了，可对每种算法绘制收敛曲线，计算求解精度。
(the completely matlab source code for equation solving by adapting steepest descent method,newton method, binary divided method,graphics user interface applied,simply and explicit, congevence curve s painted,and the precision is computed.)