If you run this piece of code, you will get an error. Why?
a = [0 1 2 3; 4 5 6 7]; a = a^2;
You must use the ** operator instead of the ^ operator.
You cannot square matrices that have a 0 as the first element.
MATLAB does not allow you to square all the elements in the matrix in a single operation.
You are attempting to multiply a non-square matrix by itself, causing a dimension mismatch.