MATLAB

3. Write = function called even_index that takes matrix, N, es input argument and returns a matrix that contains only those elements of that are in even rous and columns. In other words, it would return the elements of Hat indices (2.2), (2,4), (2,5). - (4,2), (4,4), (4,5). -, etc. Note that both the row and the column of an element must be even to be included in the output. The following would not be returned: (1.1), (2,1). (1,2) because either the row or the column or both are odd. As an example, if M were 5-by-3 matrix, then the output must be 2-by-4 because the function onits rows 1, and 5 of H and it also onits columns 1, 3, 5, and 7 of H