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GiggleSquid

If f(x)=4x+7 and g(x)= sqrt(x-3), what is (fog)(4)

  • one year ago
  • one year ago

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  1. GiggleSquid
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    keep getting these square root ones wrong. medal to correct answer

    • one year ago
  2. lgbasallote
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    lol bribing?

    • one year ago
  3. GiggleSquid
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    well, just want people to double check there answer

    • one year ago
  4. lgbasallote
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    well what's your answer

    • one year ago
  5. GiggleSquid
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    lemme do it

    • one year ago
  6. lgbasallote
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    tag me when you have an answer

    • one year ago
  7. GiggleSquid
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    \[\sqrt{23-3}\] 4.4721 but thats not right.

    • one year ago
  8. GiggleSquid
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    @lgbasallote

    • one year ago
  9. lgbasallote
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    solve for g(4) first

    • one year ago
  10. lgbasallote
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    \[(f o g)(4) \implies f(g(4))\]

    • one year ago
  11. GiggleSquid
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    ahhh, so 11

    • one year ago
  12. lgbasallote
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    yup

    • one year ago
  13. GiggleSquid
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    here is one that introduces h @lgbasallote Let f(x)=(4x^3+20)^2 and g(x)=4x^3+20. Given that f(x)=(hog)x, find h(x)

    • one year ago
  14. GiggleSquid
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    where do i start with that

    • one year ago
  15. lgbasallote
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    find (h o g) x first

    • one year ago
  16. vishweshshrimali5
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    sorry to interrupt but Prefer this link .. for understanding ; http://www.regentsprep.org/Regents/math/algtrig/ATP7/compositionfunctions.htm

    • one year ago
  17. vishweshshrimali5
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    see the examples. . you may continue @lgbasallote

    • one year ago
  18. GiggleSquid
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    this may help, in helping me

    • one year ago
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  19. GiggleSquid
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    wait, how do i find (hog)?

    • one year ago
  20. lgbasallote
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    find g(x) first

    • one year ago
  21. lgbasallote
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    what is g(x)

    • one year ago
  22. GiggleSquid
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    what do i use for x?

    • one year ago
  23. lgbasallote
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    x

    • one year ago
  24. GiggleSquid
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    isnt it just 4x^3+20 then?

    • one year ago
  25. lgbasallote
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    yup

    • one year ago
  26. lgbasallote
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    so therefore h(4x^3 + 20) = f(x) do you agree with this?

    • one year ago
  27. GiggleSquid
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    yes

    • one year ago
  28. GiggleSquid
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    where do i use that?

    • one year ago
  29. lgbasallote
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    hmm this was easier in my head...

    • one year ago
  30. GiggleSquid
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    lol

    • one year ago
  31. lgbasallote
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    how will you turn h(4x^3 + 20) into h(x) what do you think?

    • one year ago
  32. GiggleSquid
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    geeze, I have no clue.

    • one year ago
  33. lgbasallote
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    me neither :/

    • one year ago
  34. lgbasallote
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    try posting it as a new question maybe someone has an idea

    • one year ago
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