Covering some basic topics I haven't seen elsewhere on Cody.
Return a value equal to the number of input arguments to the function.
what is purpose of prod?
Who knows the last digit of pi?
Whether the input is vector?
Sum the Digits of a Number
02 - Vector Variables 3
Area of a triangle
Back to basics 8 - Matrix Diagonals
Back to basics 14 - Keywords
Back to basics 4 - Search Path
2 b | ~ 2 b
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