"Generate a 2 x 4 matrix variable mat. Verify that the number of elements is equal to the product of the number of rows and columns."

My professor gave this questiion from the book, but I don't understand what it wants me to do exactly. what does "Verify that the number of elements is equal to the product of the number of rows and columns." mean??

[Bruno Luong]

A = rand(2,4);
neA = numel(A)
nr = size(A,1)
nc = size(A,2)
if neA == nr*nc
   fprintf('youhooo\n');
else
   % fprintf('Mathworks makes a buggy code!\n');
   fprintf('math is an illusion\n');
end

[Matt J]

My professor gave this questiion from the book, but I don't understand what it wants me to do exactly.

Then why ask us? Why not ask your professor? Your professor understands better than anybody what he/she wants.

Answer 1

[Star Strider]

There is a function that will do exactly this. If you don’t want to use that function, reshape your matrix to a vector, then determine the number of elements in the vector.