Calculate the mean of corner elements of a matrix.
e.g. a=[1 2 3;
4 5 6;
7 8 9;]
Mean = (1+3+7+9)/4 = 5
Is it a number?
Add a row of zeros on top of a matrix
What is Sum Of all elements of Matrix
Check that number is whole number
Create an index-powered vector
Find offset of an element of a multi dimensional matrix
Create a matrix with difference of each row of input matrix
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