toadytica305
(FOG)(X)
f(x)= x^2+2x and g(x)= 1/x



This Question is Closed

lgbasallote
Best Response
You've already chosen the best response.
1
do you mean (f o g)(x)?

toadytica305
Best Response
You've already chosen the best response.
0
yes

toadytica305
Best Response
You've already chosen the best response.
0

lgbasallote
Best Response
You've already chosen the best response.
1
that means you substitute g(x) into EVERY x of f(x)...so what is your g(x)?

toadytica305
Best Response
You've already chosen the best response.
0
1/x

toadytica305
Best Response
You've already chosen the best response.
0
(1/x)^2 + 2(1/x)

lgbasallote
Best Response
You've already chosen the best response.
1
that's right..simplify

toadytica305
Best Response
You've already chosen the best response.
0
1/(x^2) + 2/x ?

lgbasallote
Best Response
You've already chosen the best response.
1
good there you go...are you tasked to combine it?

toadytica305
Best Response
You've already chosen the best response.
0
nope.. Don't think so it just says "find (f o g)(x)?"

lgbasallote
Best Response
You've already chosen the best response.
1
well that's your answer then...if you want you can combine it to be safe..use x^2 as LCD
\[\frac{1}{x} + \frac{2x}{x^2} = \frac{1 + 2x}{x^2}\]

lgbasallote
Best Response
You've already chosen the best response.
1
the first term is supposed to be \(\large \frac{1}{x^2}\)

toadytica305
Best Response
You've already chosen the best response.
0
Thank you!