anonymous
  • anonymous
Given f(x) = x^ 2+3 and g(x) = x+5/x find (g o f)(4)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
I got 14/19
anonymous
  • anonymous
@undeadknight26
undeadknight26
  • undeadknight26
I hate thees

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More answers

anonymous
  • anonymous
I hate them as much as you do, and it's barely the second day of school, sheesh.
undeadknight26
  • undeadknight26
Sorry m8 @dumbcow @Koikkara @Lady.Liv1776 @LunyMoony @whpalmer4 @rishavraj @rvc
anonymous
  • anonymous
. . . xD
LunyMoony
  • LunyMoony
What does the 'o' mean in " (g o f)" first though?
anonymous
  • anonymous
http://prntscr.com/88qogy
dumbcow
  • dumbcow
i dont like the notation for these (f o g) is same as f(g) so (g o f)(4) = g(f(4))
rvc
  • rvc
g of f
LunyMoony
  • LunyMoony
Ok, thx
dumbcow
  • dumbcow
plug in 4 into "f", then plug that num into "g"
anonymous
  • anonymous
f(4) = x^2+3 and g(4)?
dumbcow
  • dumbcow
no , finish f(4) first .... what do you get?
anonymous
  • anonymous
Finish f(4)? How do I do that?
dumbcow
  • dumbcow
\[f(x) = x^2 +3\] \[f(4) = 4^2 + 3\] --you substitute the "x" with "4"
anonymous
  • anonymous
Oh I figured. f(4)=4^2+3 g(4)(4)?
anonymous
  • anonymous
Nevermind I don't know what I'm doing.
anonymous
  • anonymous
Can someone just tell me if I'm right or not? xD
dumbcow
  • dumbcow
oh sorry, so whats 4^2 +3 ?
anonymous
  • anonymous
Oh I thought that was the final product. I don't know f(x)
dumbcow
  • dumbcow
you are over thinking it..... 4^2 +3 = what
anonymous
  • anonymous
19?
dumbcow
  • dumbcow
very good.... now use this number for function g ---> g(19) = (x+5)/x = (19+5)/19 = ?
anonymous
  • anonymous
1.26?
dumbcow
  • dumbcow
yeah or just 24/19 \[g(f(4)) = g(19) = \frac{24}{19}\]
anonymous
  • anonymous
Oh, thank you so much!
dumbcow
  • dumbcow
yw

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