Find the volume of the region bounded between the planes x + y + 2z = 4 and 2x + 2y + z = 2 in the first octant.

I DON'T KNOW WETHER MY LIMITS OF X AND Y ARE CORRECT OR NOT PLEASE ONCE GO THROGH IT AND HELP ME

[Walter Roberson]

On this site, questions are answered by volunteers. You can, of course try to issue commands to volunteers that they must do a certain calculation or write a certain program, but it is unlikely that anyone will bother to comply.

http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

Answer 1

[Matt J]

One way would be to download these files,

https://www.mathworks.com/matlabcentral/fileexchange/30892-analyze-n-dimensional-convex-polyhedra

and use them to obtain the vertices of the region, whereupon convhulln can be used to compute the volume.

A=[-eye(3); 1 1 2; -[2 2 1]];

b=[0;0;0;4; -2];

vertices=lcon2vert(A,b)

vertices = 5×3

0 0 2.0000 0 1.0000 0 0 4.0000 0 1.0000 0 0 4.0000 0 0

[~,volume]=convhulln(vertices)

volume = 5

Answer 2

[Walter Roberson]

In order to use viewSolid() with symbolic values, your fifth parameter (that you called ya in your code) must be symbolic. So you should

ya = 0 + 0*x;