Covering some basic topics I haven't seen elsewhere on Cody.
Return the class of the input variable.
Swap the input arguments
Evaluating a polynomial
Beginner's Problem - Squaring
multiply by three
Back to basics 5 - Clipboard
Back to basics 23 - Triangular matrix
Back to basics 7 - Equal NaNs
Back to basics 12 - Input Arguments
Back to basics 20 - singleton dimensions
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