Solve linear optimization problems using either an interior-point or a simplex optimizer.
mosek的linprog函数代替了matlab自带的函数，功能一样：
command line：x = linprog(f,A,b,[],[],l);
problem： min f'*x st. A*x <= b && l <= x；
Solve conic quadratic and semidefinite optimization problems.
线性目标，线性约束，加上约束：x向量的取值范围在一个锥形区域(这个表达式一般为z>=dist(x,y))
Solve convex quadratic optimization problems.
二次：目标是二次函数，线性约束；
凸：二次矩阵Q对称半正定(positive semidefinite)，i.e. Q对称；Q的特征值都非负
command：quadprog
Handle convex quadratic constraints.
同上
Solve mixed-integer optimization problems, including linear, convex quadratic and conic quadratic problems.
混合整数规划：x中的一些分量是整数
Solve linear least squares problems with linear constraints.
线性最小二乘问题：目标是2范数/1范数；约束为线性
lsqlin：Minimizes a least-squares objective with linear constraints.
lsqnnonneg：Minimizes a least-squares objective with nonnegativity constraints.
Solve linearandnorm minimization problems.
同上
Solve linearly constrained entropy optimization problems.
熵优化问题：x中某些项是x*lnx形式的
Solve geometric programming problems (posynomial programming).
几何优化：目标函数和约束条件都是如下形式：
Solve separable convex optimization problems.
Read and write industry standard MPS files.
