Write a function file that takes as input a matrix A, and tests whether or not the matrix is (a) square, and (b) diagonally dominant, reporting the answers on the screen. Show that your code is correct by testing it for the matrix in question 2, as w

Write a function file that takes as input a matrix A, and tests whether or not the matrix is (a) square, and (b) diagonally dominant, reporting the answers on the screen. Show that your code is correct by testing it for the matrix in question 2, as well as for cases where the matrix is not diagonally dominant, and not square.

[Jan]

@ephraim: What kind of help do you expect? You did not even ask a question but only copied the text in the form of a command.

[Kagiso Solomon]

Can I have a code showing how test for a matrix if is a square and a diagonally dominant

[Image Analyst]

Kasigo: Try this:

m = zeros(3, 3, 3, 3);
if length(unique(size(m))) == 1 % Works for any number of dimensions of matrix (2-D, 3-D, 4-D, etc.)
	fprintf('Array is square.\n');
else
	fprintf('Array is NOT square.\n');
end

Surely a smart guy like you can take the definition from Wikipedia: Diagonally_dominant_matrix and do the code.

Answer 1

[Image Analyst]

Functions that may help you: size(), warndlg(), sprintf(), inputdlg(), fprintf(), helpdlg().

Hints:

message = sprintf('The value is %f', theValue);
uiwait(helpdlg(message));
errorMessage = sprintf('This array is not square!\nIt has %d rows and %d columns', rows, columns);
uiwait(warndlg(errorMessage));
fprintf('%s\n', errorMessage);

[Image Analyst]

Try this: http://www.mathworks.com/matlabcentral/answers/8626-how-do-i-get-help-on-homework-questions-on-matlab-answers