OK. I figured out the issue with the test suite. Please check the absolute value of the difference when comparing the computed answers to the correct ones. Otherwise, you'll get some really silly answers. (Like this one! :-)
My, you are tricky, James, finding all those loopholes. I've fixed the test suite to check against upper and lower bounds of each answer.
I was just really curious why one of my answers worked when it didn't include a or b. Some experimentation and a lot of (now wrong) solutions narrowed it down. I had to use some of these equations in my senior project at college, so I knew that the dimensions were very important!
Test for balanced parentheses
middleAsColumn: Return all but first and last element as a column vector
Get the length of a given vector
Split a string into chunks of specified length
Right Triangle Side Lengths (Inspired by Project Euler Problem 39)
Scrabble Scores - 8
Lights Out 11 - 5x5, with wrapping, x moves
Divisible by n, prime divisors - 11, 13, 17, & 19
Scrabble Scores - 13
Power Times (of the day)
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