Thread: Functions

I was doing some math work and I got stuck on a few questions...

If G(X) = 2x + 3

x-4

Find a value of X where G(X) does not exist.
Does this mean make everything = 0?

Given f(x) = x^2 find in smplest form
B. F(2+h)-f(2)

h

#1: What values result in division by 0

#2:

Simplify

#1. Yeah I figured as much
#2.

I got to the point, and I'm not sure if I'm doing functions right. BUt the answer supposedly is 4+h

Now assuming I just square the two functions.
I get, not sure if my math is right, but I get

4+4h+h^2 - 4

h

h^2 + 4h

h

Not too sure where I progress from there to get 4 + h. Fast answers, though, lots of appreciation for you guys

I hate to try to rush you guys, bt I have a test tommorow, and I would much prefer being able to do that particular problem before taking it Sorry for the double post!

Ok I just realized, the h is divided from both h^2 and 4h, thus leaving H + 4, am I right?

Yep you right