设计并解决一个线性规划问题，要求：
1）问题应具有一定的实际背景，最好与自己的专业相关；
2）目标函数至少包含6个以上的变元；
3）包含等式约束和不等式约束两种约束条件；
4）写出求解问题的Matlab程序；
5）对求解的结果进行必要的解释和分析说明。(Design and solve a linear programming problem, requiring:
1) the problem should have a certain practical background, and it should be related to their own specialty.
2) the objective function contains at least 6 variables.
3) there are two constraint conditions including equality constraint and inequality constraint.
4) write the Matlab program for solving the problem.
5) it is necessary to explain and analyze the results of the solution.)