x = [ 2 -1 -3]
y = [1.5 -1]
2 b | ~ 2 b
Remove the two elements next to NaN value
Sum the elements in either diagonal of a square matrix
Array of Ones
Find the minimum element of the matrix
Switch matrix to a column vector
Weave two vectors into one
find the maximum element of the matrix
Calculate the derivative of a polynomial
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