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.
Determine if input is odd
02 - Vector Variables 3
MATLAB Basic: rounding II
first element of matrix
Matrix Ax=B problem
Simple Vector Addition
Sum two matrices
Simple String Concatenation
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