中文说明：
机械优化设计的作业。包括一维搜索方法（二次差值，牛顿法，黄金分割法），以及最速下降法和内点惩罚函数法及等值线图。
English Description：
Operation of mechanical optimization design. Including one-dimensional search methods (quadratic difference, Newton method, golden section method), as well as the steepest descent method, interior point penalty function method and isoline map