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signal (version 0.7-6)
polyval:
Evaluate a polynomial
Description
Evaluate a polynomial at given points.
Usage
polyval(coef, z)
Arguments
coef
coefficients of the polynomial, defined in decreasing power.
z
the points at which to evaluate the polynomial.
Value
An array of
length(z)
, the polynomial evaluated at each element of
z
.
See Also
poly
,
roots
Examples
polyval(c(1, 0, -2), 1:3) # s^2 - 2