Given the variable x as your input, multiply it by three and put the result in y.
Duplicate of Problem 2980.
This user (ALBERT ALEXANDER STONIER) appears to have gamed the system, with fraudulent "likes" of this unremarkable solution submitted by 'sock-puppet' accounts. —DIV
Calculate the derivative of a polynomial
Back to basics - mean of corner elements of a matrix
Sum of the Matrix Elements
Find Out sum of principal diagonal element of given matrix
Evaluating a polynomial
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