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Syntax:
where ⟨values⟩ and ⟨points⟩ are lists of equal length and <variable> is an algebraic expression (preferably a kernel).
INTERPOL generates an interpolation polynomial f in the given variable of degree length(⟨values⟩)-1. The unique polynomial f is defined by the property that for corresponding elements v of ⟨values⟩ and p of ⟨points⟩ the relation f(p) = v holds.
The Aitken-Neville interpolation algorithm is used which guarantees a stable result even with rounded numbers and an ill-conditioned problem.
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