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
Bottles of beer
Set some matrix elements to zero
07 - Common functions and indexing 5
Back to basics - mean of corner elements of a matrix
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