you probably just added something wrong droodles...
f o f(x) is always x, so you don't need to go through all the working out for that kind of thing...
have you done inverse functions yet?
i think f o f(x) means "what does y equal when x=y" (if we call f(x) "y")
if x=y, it makes sense that y=x
(i think that's right! tell me if i'm wrong, anyone...)
umm... wot?
is applying f(x) twice, like
, so only in rare cases does
such as if
, then
divided by
there has to be another way of doing this besides manual long division.
You also could use equality of polynomials as an alternative to Polynomial Division.
how so.... there is a remainder in this case, it'll be very tricky...
but where given a factor
and a polynomial
, you could set up the quotient
such that
expanding that with create two equal polynomials, where the coefficients are the same, with this you can find a,b,...