二次规划为非线性规划的一种，若某非线性规划的目标函数为自变量x 的二次函数，约束条件又全是线性的，就称这种规划为二次规划。 -Quadratic programming as a nonlinear programming, if the objective function of a nonlinear programming quadratic function as independent variable x, and the constraints are all linear, ca