Section: Optimization and Curve Fitting
polyder
function returns the polynomial coefficients resulting
from differentiation of polynomial p
. The syntax for its use is either
pder = polyder(p)
for the derivitave of polynomial p, or
convp1p2der = polyder(p1,p2)
for the derivitave of polynomial conv(p1,p2), or still
[nder,dder] = polyder(n,d)
for the derivative of polynomial n/d
(nder
is the numerator
and dder
is the denominator). In all cases the polynomial
coefficients are assumed to be in decreasing degree.
Contributed by Paulo Xavier Candeias under GPL
polyder
--> polyder([2,3,4]) ans = 4 3
--> polyder([2,3,4],7) ans = 28 21
--> [n,d] = polyder([2,3,4],5) n = 20 15 d = 25