The Purplemath Forums

Helping students gain understanding and self-confidence in algebra.

Skip to content

Given f(x) = x + 2, g(x) = x, find x for (fg)(x) = 8  TOPIC_SOLVED

Quadratic equations and inequalities, variation equations, function notation, systems of equations, etc.
Post a reply

Given f(x) = x + 2, g(x) = x, find x for (fg)(x) = 8

Postby The Stranger on Thu Oct 07, 2010 3:11 pm

Given f(x)=x+2 and g(x)=x, find the value(s) of x for which (fg)(x)=8

I'm completely lost.
User avatar
The Stranger
 
Posts: 6
Joined: Wed Oct 06, 2010 4:52 pm
Top

Sponsor

Sponsor
 
Top

Re: Given f(x) = x + 2, g(x) = x, find x for (fg)(x) = 8  TOPIC_SOLVED

Postby buddy on Thu Oct 07, 2010 3:35 pm

(fg)(x) means to times f and g
then put it equal to 8
solve for x
buddy
 
Posts: 112
Joined: Sun Feb 22, 2009 10:05 pm
Top

Re: Given f(x) = x + 2, g(x) = x, find x for (fg)(x) = 8

Postby The Stranger on Thu Oct 07, 2010 4:37 pm

Thanks, I got it.
User avatar
The Stranger
 
Posts: 6
Joined: Wed Oct 06, 2010 4:52 pm
Top
Post a reply

Return to Intermediate Algebra

Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group. Color scheme by ColorizeIt!