Why is this error comming?

7 次查看(过去 30 天)
Deepak Singh
Deepak Singh 2021-10-14
  2 个评论
John D'Errico
John D'Errico 2021-10-14
As is too often the case, someone has posted a picture of their code. Now, for someone to test out what you did, we need to type in evertything, with no errors on our part. And that will take care and a fair amount of time.
Instead, you could have paste in your data directly, whcih would have taken fewer step on your part, and LESS time for you too. If you paste in text directly, then we can copy and paste it directly into MATLAB. ANd that would allow me to identify exactly what you did wrong in a few seconds.
So what you have done is to make it more difficult for someone to help you.
Is there a good reason why you want to make it more difficult to get help? Perhaps someone may bother to type in your code. Not me. Sorry.
Deepak Singh
Deepak Singh 2021-10-14
okay.
Here's the code for it"-
clc;
clear;
carb = [80, 65, 30];
prot = [10, 12, 23];
fats = [32, 56, 42];
vit = [70, 37, 58];
carb_ex = 200;
prot_min = 175;
fats_max = 150;
A = [-prot fats];
b = [-prot_min, fats_max];
Aeq = carb;
beq = carb_ex;
lb = [0, 0, 0];
ub = [100, 100, 100];
x = linprog(-vit, A, b, Aeq, beq, lb, ub);

请先登录,再进行评论。

回答(1 个)

Image Analyst
Image Analyst 2021-10-14
We can't run an image. You should have posted your code as code.
It looks like A has 6 elements, whereas b has only 2 elements and needs 6.
  8 个评论
Deepak Singh
Deepak Singh 2021-10-14
So as given i question we have to find hw much kilogram of each food item the person should consume so as to have maximum intake of vitamins by using any appropriate built in function present in matlab so i did with linprog and u can see the error.
Image Analyst
Image Analyst 2021-10-14
Looks like it expects A to have rows, more than 1. Right now it's a row vector with one row. You can change it into a column vector with 6 rows by doing
A = [-prot, fats]';
Using ' transposes the array changing it from a 6-column row vector into a 6-row column vector. Equivalent to
A = reshape(A, [], 1); % Make into a single column.
or
A = [-prot(:); fats(:)];

请先登录,再进行评论。

类别

Help CenterFile Exchange 中查找有关 Get Started with MATLAB 的更多信息

标签

产品


版本

R2021a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by