This user (ALBERT ALEXANDER STONIER) appears to have gamed the system, with fraudulent "likes" of this unremarkable solution submitted by 'sock-puppet' accounts. —DIV
Sum of diagonal of a square matrix
select the primes of a vector
Switch matrix to a column vector
Matlab Basics - Pick out parts of a vector
Matlab Basics II - Log and natural log
Matlab Basics - Rounding II
Matlab Basics - Convert a row vector to a column vector
Matlab Basics - Set unwanted parts of a vector to zero
Matlab Basics II - Count rows in a matrix
Replace every 3rd element in a vector with 4
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