deriv.polynomial(p)
p
deriv
integral.polynomial
pr <- poly.calc(1:5) pr ## -120 + 274*x - 225*x^2 + 85*x^3 - 15*x^4 + x^5 deriv(pr) ## 274 - 450*x + 255*x^2 - 60*x^3 + 5*x^4