you should concatenate the elements of a matrix in one dimensional array, for example if the input is
A = [1 2 3; 4 5 6; 7 8 9];
the output will be like this:
B = [1 2 3 4 5 6 7 8 9];
Remove any row in which a NaN appears
"Low : High - Low : High - Turn around " -- Create a subindices vector
Calculate the area of a triangle between three points
intersection of matrices
Determine the number of odd integers in a vector
determine the sum of the squares
sum all digits
No more zeros
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