This problem has been polished along with an enhanced test suite.
Remove any row in which a NaN appears
Back to basics 8 - Matrix Diagonals
Count up then down
Find the index of the largest value in any vector X=[4,3,4,5,9,12,0,4.....5]
Deleting an element in a matrix
Solve expression II
Get derivarive of polynomial given as vector array.
Find sum of negative elements in row.
Sum positive elements of matrix.
Convert array of decimal numbers into hexadecimal numbers array.
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