y=function([3 -2 -4])
In here, input vector indicate 3*x^2-2*x-4, y is solution of former equation.
Replace NaNs with the number that appears to its left in the row.
Angle between two vectors
Determine Whether an array is empty
How many jokers?
Change string to number
Analyze observation data
Replace 0 to NaN!
Calculate some equation
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