vb环境下实现牛顿法迭代求最优，最优化原理与方法中无约束最优化的求解-Newton s method to achieve vb environment iterative optimal, optimization theory and methods for solving unconstrained optimization

现代设计理论中涉及的一些常用的优化设计方法，如一维搜索（黄金分割、二次差值等）、无约束优化方法（梯度法、牛顿法等）、约束优化方法（复合形法、DFP、惩罚函数法等）。-Some commonly used method for optimizing the design of modern design theory involved, as one-dimensional search (golden section, the second difference, etc.), unconstr