The title and description of this problem have been cleaned up. Also, its test suite has been expanded and improved.
Energy of a photon
Doubling elements in a vector
Find the index of the largest value in any vector X=[4,3,4,5,9,12,0,4.....5]
Side of an equilateral triangle
For given vectors x,y find coresponding spline coefficients.
Set x value to each even index of vector y.
Calculate the values of a polynomial.
Pointwise multiplication of vectors.
Calculate the sum of elements of n*n Hilbert matrix.
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