How to plot 100a +75b +50c - (100b) in matlab?

Question

K R 2017-5-15

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/340293-how-to-plot-100a-75b-50c-100b-in-matlab

回答： KSSV 2017-5-15

I need to plot Max z = 100A + 75B+ 50C

Constraints: A+B+C=100, A≥0, B≥0, C≥0

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Rik 2017-5-15

What is it exactly you want to plot against what? Because of your constraints this 4D system can be reduced to at least 3D, so you can plot valid (A,B,z) points.

Have a read here and then clarify your question so we can help you along. Right now it is impossible to know if you need surf or solve.

(Oh, and show that you put in effort, people will be more likely to try to help if you do)

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

KSSV 2017-5-15

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/340293-how-to-plot-100a-75b-50c-100b-in-matlab#answer_267037

在 MATLAB Online 中打开

N = 10 ;
A = linspace(0,100,N) ;
B = linspace(0,100,N) ;
C = linspace(0,100,N) ;
[A,B,C] = ndgrid(A,B,C) ;
thesum = A+B+C ;
idx = find(thesum==100) ;
 z = 100*A(idx) + 75*B(idx)+ 50*C(idx) ;
scatter3(A(idx),B(idx),C(idx),z,z,'.')