This problem has been polished and the test suite expanded and improved.
given 3 sides, find area of this triangle
Swap the input arguments
Length of a short side
Back to basics - mean of corner elements of a matrix
Sum positive elements of matrix.
Calculate the sum of elements of n*n Hilbert matrix.
Find the sines of an isosceles triangle when given its area and height
Find scalar product of two polynomials a and b, given as vector array.
Compare two strings.
Delete x value in given vector y.
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