make all the elements in given x zero.
Simple but fun
I'm not sure this would work if there is a 0 in x...
Arrange Vector in descending order
Count up then down
Try 1.5.4: Celsius to Fahrenheit
Find the hypotenuse
Replace all odd numbers with NaN
find the 'M'
Make an identity matrix whose diagonal elements are 1:n
Where is the number that you want to find?
Sum the rows
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