Find sum of negative elements in row.
Example x=[1 -5 3 4 -6 6 7 8 9 10]
result = -11
Arrange vector in ascending order
Back to basics - mean of corner elements of a matrix
Calculate square and cube of number
Delete x value in given vector y.
Opposite task convert string hexadecimal numbers array into array of decimal numbers .
Find cosine between two given vectors u and v.
Multiply two polynomials p and q given in in vector representation.
Solve expression III
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