Additional test cases have been added.
Please check your test suites, results must have opposite signs.
Thanks! The problem now is reformulated;)
Sum of diagonal of a square matrix
Output any real number that is neither positive nor negative
Find the index of the largest value in any vector X=[4,3,4,5,9,12,0,4.....5]
Evaluating a polynomial
Sum of series V
Sum of series III
Sum of series VII
Sum of series II
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