Is A the inverse of B?
Length of a short side
Sum of odd numbers in a matrix
Change the first and last diagonal element of the identity matrix to zero
Replace x value into y value in string text.
Divide polynomial p1 by p2.
Find scalar product of two polynomials a and b, given as vector array.
Display positive elements of matrix.
Opposite task convert string hexadecimal numbers array into array of decimal numbers .
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