Find sum of negative elements in row.
Example x=[1 -5 3 4 -6 6 7 8 9 10]
result = -11
Duplicate each element of a vector.
05 - Vector Equations 2
Reverse a matrix
Get derivarive of polynomial given as vector array.
Opposite task convert string hexadecimal numbers array into array of decimal numbers .
Convert array of decimal numbers into hexadecimal numbers array.
Count given word x in text.
Delete x value in given vector y.
Calculate roots of polynomial given as vector array.
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