Convert an RGB code to the corresponding CMYK code for printing.
The RGB input is a [1×3] double array between 0 and 1.
CMYK must be a [1×4] double array between 0 and 1.
Back to basics 20 - singleton dimensions
Output any real number that is neither positive nor negative
Basics: Divide integers to get integer outputs in all cases
Sum the numbers on the main diagonal
Find the hypotenuse
Wien's displacement law
Compound interest - number e
Sum two real numbers
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