Calculate the mean of corner elements of a matrix.
e.g. a=[1 2 3;
4 5 6;
7 8 9;]
Mean = (1+3+7+9)/4 = 5
Back to basics 9 - Indexed References
Whether the input is vector?
Return the first and last character of a string
Find nth maximum
Max of a Vector
Return the names and values of the input arguments of a function
User defined nextpow function
Let's get back to school, and create multiplication tables
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