how to call two non-empty square matrixes?

his file to get the size of both input variables A and B and add further

statements to check that

A is a non-empty square matrix and B has the same number of rows

as A

% The input A should be a square matrix and B should have the same

% number of rows as A.

% On return the outputs U and Y are such that U is upper triangular

% and U*X=Y is an equivalent linear system to A*X=B.

Y=[];

U=[];

Answer 1

[Image Analyst]

Check if A is square

if size(A, 1) == size(A, 2)

To check if size of A equals the size of B

if isequal(size(A), size(B))

To check if "B should have the same number of rows as A":

if size(A, 1) == size(B, 1)

[shoaib Ch]

but how can i take input from user ? for both matrics

[Image Analyst]

Try input() or inputdlg(). Unfortunately there is no way that I know of, after 40 years of MATLAB development to conveniently enter a matrix. You'd think there would be, but no, there in no inputMatrix() function (yet).

[shoaib Ch]

thanx but i have one more question that what about U , X and Y ??is X be inveraA *B or identity Matrix