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.
Check if sorted
Duplicate each element of a vector.
Matlab Basics - Switching Assignments
Sum of the Multiplication of Vectors
Convert radians to degrees
Find remainder when x is divided by 3
modulus of a number
find a specific element from an matrix
find the mean of all elements in a matrix
Calculating selling price
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