Find sum of negative elements in row.
Example x=[1 -5 3 4 -6 6 7 8 9 10]
result = -11
Roll the Dice!
Project Euler: Problem 6, Natural numbers, squares and sums.
Duplicate each element of a vector.
Find product of eigenvalues of n*n magic matrix.
Delete x value in given vector y.
Divide polynomial p1 by p2.
Sum positive elements of matrix.
Multiply two polynomials p and q given in in vector representation.
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