f(x)=5x+5 and g(x)=3x^2+3x Find: (f(g))(6) "Find the f of g"(6)
Q qbkr21 New member Joined Sep 24, 2006 Messages 16 Jan 9, 2007 #1 f(x)=5x+5 and g(x)=3x^2+3x Find: (f(g))(6) "Find the f of g"(6)
M Mrspi Senior Member Joined Dec 17, 2005 Messages 2,128 Jan 9, 2007 #2 Re: Composition qbkr21 said: f(x)=5x+5 and g(x)=3x^2+3x Find: (f(g))(6) "Find the f of g"(6) Click to expand... Start by finding g(6): g(x) = 3x^2 + 3x g(6) = 3(6)^2 + 3(6) g(6) = 3(36) + 18 g(6) = 108 + 18 g(6) = 126 Now, f(g(6)) = f(126) f(x) = 5x + 5 f(126) = 5(126) + 5 Ok...you can finish it.
Re: Composition qbkr21 said: f(x)=5x+5 and g(x)=3x^2+3x Find: (f(g))(6) "Find the f of g"(6) Click to expand... Start by finding g(6): g(x) = 3x^2 + 3x g(6) = 3(6)^2 + 3(6) g(6) = 3(36) + 18 g(6) = 108 + 18 g(6) = 126 Now, f(g(6)) = f(126) f(x) = 5x + 5 f(126) = 5(126) + 5 Ok...you can finish it.
Q qbkr21 New member Joined Sep 24, 2006 Messages 16 Jan 9, 2007 #3 Ok great I apprecaite your help. Thanks for working it out for me that really helped me out
