Actually, high school didn't teach you how to use linear programming. If you look at the figures, you might as well use my method to ensure that you will never fail. I entered the college entrance examination for mathematics 133.

For example, the question 1, because it requires X+3Y, so we do what we like, and the way of doing X+3Y is disgusting.

2X+3Y & lt； /=24 〕①

{ X-Y & lt； /=7 ② In fact, I only need two formulas, believe it or not?

y & lt/=6 ③

Let a 1+b 2 = NZ.

Because the coefficients of x and y are 1: 3, (2a+b)/(3a-b)= 1/3.

6a+3b=3a-b 3a=-4b a/b=-4/3。 You can get the original formula according to this ratio. You can tell me whether it is good or not.