polyval

Evaluate a polynomial at given point(s).

polyval(coeffs, x) → r

TypeScriptnumwa

Evaluate a polynomial at given point(s).

Name	Description
coeffs	Polynomial coefficients (descending order)
x	Evaluation point (scalar or array)

Polynomial value(s) at x

>> polyval([1, 0, -1], 2)

3  (evaluates x² - 1 at x=2)

>> polyval([1, 0], [1, 2, 3])

[1, 2, 3]