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!
Rotate a Matrix by 90 degrees
Find out missing number from a vector of 9 elements
Sum of series V
Find Euclidean norm of given vector u.
For given xx,x, y vectors build spline of x and y and find yy values for xx vector.
Sum positive elements of matrix.
Divide polynomial p1 by p2.
Pointwise multiplication of vectors.
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