Add only the even numbers of x
x = [1 2 3 4 5]
the positive numbers are: 2 4, so their sum is 6
Times 2 - START HERE
Omit columns averages from a matrix
construct matrix with identical rows
Find out value of sine given by degree.
BASICS - sum part of vector
Check capital letters
Odd times 3
Magnitude of a vector
Reduce the logic
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