Additional test cases have been added.
Find the sum of the elements in the "second" diagonal
07 - Common functions and indexing 6
Find the index of the largest value in any vector X=[4,3,4,5,9,12,0,4.....5]
Sum of series V
Remove the positive integers.
ASCII sum of phrases
Raise each element to the power of its index in a matrix
Nth root of a number
Find NaNs in the matrix
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