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
Sums with Excluded Digits
radius of a spherical planet
Rotate a Matrix
Create a vector whose elements depend on the previous element
Remove the positive integers.
Let's get back to school, and create multiplication tables
Sum of diagonals elements of a matrix
Create a matrix with difference of each row of input matrix
Matrix to column conversion
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