Coefficients of a polynomial when roots are given or the characteristic polynomial of a matrix.
poly(x)
An array of the coefficients of the polynomial in order from highest to lowest polynomial power.
a vector or matrix. For a vector, it specifies the roots of the polynomial. For a matrix, the characteristic polynomial is found.
Original Octave version by Kurt Hornik. Conversion to R by Tom Short.
Octave Forge https://octave.sourceforge.io/
polyval, roots, conv
polyval
roots
conv
poly(c(1, -1)) poly(roots(1:3)) poly(matrix(1:9, 3, 3))
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