Additional test cases have been added.
The Hitchhiker's Guide to MATLAB
Back to basics 9 - Indexed References
Back to basics 14 - Keywords
Sum the numbers on the main diagonal
Angle between two vectors
Convert a numerical matrix into a cell array of strings
Find all the zeros of sinus , cosinus and tangent in a given interval
Number of bytes required to store a sparse matrix
Multiply 2 numbers
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