We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
0
63
1
avatar+106 

Given that f(x)=x^2, g(x)=x^2+8x, and h(x)=9x

find f∘g∘h= 

Simplify your answers as much as possible

 

My attempt:

f(x^2))g(x^2+8x)))h(9x)))

x^2+8x+9x

x^2+4x*4x*3x*3x

x^2+(16x)^2+(9)^2

=x^2+256x+81 

I've been struggling with the order of the composition of functions for a while so I'd be extremely grateful if anyone could please explain it to me!

Thank you in advance!

 Sep 29, 2019
edited by Roxettna  Sep 29, 2019
 #1
avatar
0

Just multiply them together...you can do it in steps

 

x^2   * ( x^2 + 8x)  =   x^4 + 8x^3

x^4 + 8x^3    *  9x  =

9x5 +72x4

 Sep 29, 2019

32 Online Users

avatar
avatar
avatar
avatar
avatar