Test suite needs to be fixed. Missing parenthesis.
Thank you for noticing, I have fixed it.
Still broken. 'e' is not a valid form of 'exp'. Please change it. And as a friendly suggestion, test a reference solution before publishing problems so that you can see they are broken.
This problem has been edited and is now solvable.
Make one big string out of two smaller strings
Remove NaN ?
Sum the numbers on the main diagonal
UICBioE240 problem 1.9
UICBioE240 problem 1.18
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