Solve given expression.
Note that this problem uses the word solve when it needs to say EVALUATE.
Also the required code to pass the tests shouldn't be available by COPY-AND-PASTE from Test Suite!
Reverse the vector
Back to basics 22 - Rotate a matrix
Square a Number
For given xx,x, y vectors build spline of x and y and find yy values for xx vector.
Calculate the sum of elements of n*n Hilbert matrix.
Sum positive elements of matrix.
Find hen's weight.
Find scalar product of two polynomials a and b, given as vector array.
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