Find the numeric mean of the prime numbers in a matrix.
Sort a list of complex numbers based on far they are from the origin.
Check if sorted
Make one big string out of two smaller strings
Remove the positive integers.
Find sum of negative elements in row.
Calculate the sum of elements of n*n Hilbert matrix.
For given vectors x,y find coresponding spline coefficients.
Solve expression III
Find Euclidean norm of given vector u.
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