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.
Number of Circles in a Number
Back to basics 22 - Rotate a matrix
Return 'on' or 'off'
Volume of a Simplex
convert matrix to single column
Wien's displacement law
Create an n-by-n null matrix and fill with ones certain positions
Compound interest - number e
Sum two real numbers
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