几种特殊的线性规划问题，可以将一些复杂的非线性规划问题变换成线性规划问题，这对于求解自变量数目特别多的场合很实用，比如：图像处理领域里面，像素点很多，计算量很大。-Several special linear programming problem, you can transform some complicated nonlinear programming problem into linear programming problem, which is the number of arg