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anonymous

  • one year ago

Given f(x) = x^ 2+3 and g(x) = x+5/x find (g o f)(4)

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  1. anonymous
    • one year ago
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    I got 14/19

  2. anonymous
    • one year ago
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    @undeadknight26

  3. undeadknight26
    • one year ago
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    I hate thees

  4. anonymous
    • one year ago
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    I hate them as much as you do, and it's barely the second day of school, sheesh.

  5. undeadknight26
    • one year ago
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    Sorry m8 @dumbcow @Koikkara @Lady.Liv1776 @LunyMoony @whpalmer4 @rishavraj @rvc

  6. anonymous
    • one year ago
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    . . . xD

  7. LunyMoony
    • one year ago
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    What does the 'o' mean in " (g o f)" first though?

  8. anonymous
    • one year ago
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    http://prntscr.com/88qogy

  9. dumbcow
    • one year ago
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    i dont like the notation for these (f o g) is same as f(g) so (g o f)(4) = g(f(4))

  10. rvc
    • one year ago
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    g of f

  11. LunyMoony
    • one year ago
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    Ok, thx

  12. dumbcow
    • one year ago
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    plug in 4 into "f", then plug that num into "g"

  13. anonymous
    • one year ago
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    f(4) = x^2+3 and g(4)?

  14. dumbcow
    • one year ago
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    no , finish f(4) first .... what do you get?

  15. anonymous
    • one year ago
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    Finish f(4)? How do I do that?

  16. dumbcow
    • one year ago
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    \[f(x) = x^2 +3\] \[f(4) = 4^2 + 3\] --you substitute the "x" with "4"

  17. anonymous
    • one year ago
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    Oh I figured. f(4)=4^2+3 g(4)(4)?

  18. anonymous
    • one year ago
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    Nevermind I don't know what I'm doing.

  19. anonymous
    • one year ago
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    Can someone just tell me if I'm right or not? xD

  20. dumbcow
    • one year ago
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    oh sorry, so whats 4^2 +3 ?

  21. anonymous
    • one year ago
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    Oh I thought that was the final product. I don't know f(x)

  22. dumbcow
    • one year ago
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    you are over thinking it..... 4^2 +3 = what

  23. anonymous
    • one year ago
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    19?

  24. dumbcow
    • one year ago
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    very good.... now use this number for function g ---> g(19) = (x+5)/x = (19+5)/19 = ?

  25. anonymous
    • one year ago
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    1.26?

  26. dumbcow
    • one year ago
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    yeah or just 24/19 \[g(f(4)) = g(19) = \frac{24}{19}\]

  27. anonymous
    • one year ago
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    Oh, thank you so much!

  28. dumbcow
    • one year ago
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    yw

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