find the first elements of a column matrix
This would be better as "find the nth element of an array." Also, a column matrix doesn't exist. Perhaps you meant column vector, though the variables in your test cases are row vectors.
Roll the Dice!
Back to basics 5 - Clipboard
Generate a NaN...on purpose
07 - Common functions and indexing 2
Matlab Basics - Rounding III
find the mean of all elements in a matrix
Find remainder when x is divided by 3
multiply an array by its position number
Calculating selling price
Find the last digit
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