Find all elements less than 0 or greater than 10 and replace them with NaN
Multiply a column by a row
Vectorize the digits of an Integer
select the primes of a vector
Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock.
Remove the first, third and fifth rows of a matrix
Triangle of numbers
Approximate the cosine function
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