The test set should contain a polynomial with complex roots where the real part is positive, and a polynomial with a positive and a negative root.
Too less test cases
This removes only polinomials if all the roots are positive. Should read 'all' instead of 'any' here.
Back to basics 19 - character types
Longest run of consecutive numbers
Find common elements in matrix rows
Remove any row in which a NaN appears
Find the peak 3n+1 sequence value
Find all elements less than 0 or greater than 10 and replace them with NaN
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