Replace Vector Elements
Switch matrix to a column vector
Find the index of the largest value in any vector X=[4,3,4,5,9,12,0,4.....5]
Determine the mean of matrix
Create the following sequence : 0 1 1 4 9 25 64 169 ...
Convert a number to its Roman representation
Reverse a matrix
Find the area of the four walls
Concatenate two strings
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