Combining Functions for f(x) and g(x)

label Algebra
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for f(x) = square root x^2+5       and g(x) = 2 + square root x

Determine (f o g) (9). Round you answer to 2 decimal places, if necessary

Answer (f o g) (9) =

Apr 9th, 2015

g(9)=2+3=5, f(5)=square root 25+5=sqrt 30=5.48....................................................................................

Apr 9th, 2015

I still not sure if I understand how you got the answer.


Apr 9th, 2015

(f o g) (9)=f(g(9))=f(2+sqrt 9)=f(5)=sqrt 25+5

how about now?

Apr 9th, 2015

I think I might understand it better.

Apr 9th, 2015

Okay I have studied it for a minute and I got it now, thank you for your help.

Apr 9th, 2015

ok, the (f o g) (x)=f(g(x)) part is the formula you need to know

Apr 9th, 2015

okay, got it now

Apr 9th, 2015

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Apr 9th, 2015
Sep 25th, 2017
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