# Having trouble with a few Pre-Calc problems

• Sep 13th 2011, 08:01 PM
Having trouble with a few Pre-Calc problems
http://i54.tinypic.com/125hvn4.jpg

I figured for s(d) it is (d^2 + 1)^.5
but then I get stuck on the composition..
• Sep 13th 2011, 08:54 PM
Re: Having trouble with a few Pre-Calc problems
Ok for the g(t) its = sec(t)

still having trouble with the rest
• Sep 15th 2011, 12:13 PM
HallsofIvy
Re: Having trouble with a few Pre-Calc problems
Quote:

Yes, and to get $f(g(x))= \frac{sec(t)}{5+ sec(t)}$ you must have $f(x)= \frac{x}{5+ x}$. Just replace the "g(x)" with "x".