Check if a inputted variable is a number or a string, given a string input (i.e. '1' is 1 and thus a number, 'a' is a string).
Additional test cases have been added.
Tell me the slope
Add two numbers
Sum the 'edge' values of a matrix
String Delimination and Outputting
Matrix Max Finder
Find the index of the lowest number in a matrix
Matrix Generation from Vector Multiplication
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