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Mathhelp346
Group Title
HELP PLEASE!!!:
f(x)=3x4
g(x)=x^2
1.(f o g)(2)
2.(f o f)(2)
f(x)=2x
g(x)=x^2+2
h(x)=4x+3
1.(h o f)o g
 2 years ago
 2 years ago
Mathhelp346 Group Title
HELP PLEASE!!!: f(x)=3x4 g(x)=x^2 1.(f o g)(2) 2.(f o f)(2) f(x)=2x g(x)=x^2+2 h(x)=4x+3 1.(h o f)o g
 2 years ago
 2 years ago

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Mathhelp346 Group TitleBest ResponseYou've already chosen the best response.0
for the first part, what does the 2 do? i know how to solve (f o g)(x)
 2 years ago

micahwood50 Group TitleBest ResponseYou've already chosen the best response.1
(f o f)(2) is basically saying f( f(2) ), in other words, in 3x4, replace x with ( 3x  4 ) so you get f o f(2) = 3( 3(2)  4 )  4 then simplify.
 2 years ago

Mathhelp346 Group TitleBest ResponseYou've already chosen the best response.0
and how would i do the second part?
 2 years ago

Mathhelp346 Group TitleBest ResponseYou've already chosen the best response.0
like h(f(x)(g(x))? but then how do i solve it
 2 years ago

micahwood50 Group TitleBest ResponseYou've already chosen the best response.1
(h o f)(x) = h(f(x)) so (h o f)o g = h(f(x)) o g = h( f ( g(x) ) ) f(g(x)) = 2(x^2+2) so h ( f ( g ( x ) ) ) = 4(2(x^2+2) )+3 Is this clear enough?
 2 years ago

Mathhelp346 Group TitleBest ResponseYou've already chosen the best response.0
yes thank you
 2 years ago

micahwood50 Group TitleBest ResponseYou've already chosen the best response.1
Glad I helped.
 2 years ago

Mathhelp346 Group TitleBest ResponseYou've already chosen the best response.0
wait but if f o g would nt it be h(f(x)(g(x))
 2 years ago

Mathhelp346 Group TitleBest ResponseYou've already chosen the best response.0
h o f is h(f(x)) and then there's o g so wouldnt it be h(f(x)(g(x))
 2 years ago

micahwood50 Group TitleBest ResponseYou've already chosen the best response.1
Well, h o f o g = h( f( g(x) ) ) Basically (h o f) o g is same since h and f go first anyway.
 2 years ago

Mathhelp346 Group TitleBest ResponseYou've already chosen the best response.0
ah ok thanks
 2 years ago
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