我用了黄金分割的方法求最优值，还有怎么样求一个搜索区间。-I used the golden section method to solve the optimal value, as well as how to request a search range.

黄金分割搜索算法，能够快速的搜索出想要的结果，并且能够得到优化的结果，在优化计算中得到广泛的应用。-Golden section search algorithm to quickly search the desired results, and the results can be optimized in the optimization calculation is widely used.

机械优化设计中的一维搜索方法：黄金分割法-Optimization of Mechanical Design of one-dimensional search methods: golden section method