Quantcast

A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

jennychan12

  • 2 years ago

antiderivative of (x^2+4x)^1/3 ?

  • This Question is Closed
  1. jennychan12
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[\sqrt[3]{x^2+4x}\]

  2. jennychan12
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i know that u = x^2+4x so du = (2x+4)dx where do i go from there?

  3. jennychan12
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @agent0smith @Dido525

  4. AtiFS
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    well u multipl that by 1/3 too

  5. AtiFS
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1/3 dx (x^2 + 4x) = 1/3* (2x + 4)..I think so

  6. jennychan12
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    how did you get that? can u explain?

  7. jennychan12
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    cuz du = (2x+4)dx = (2(x+2))dx so 1/2du = (x+2)dx then...?

  8. AtiFS
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    actually, the value of power multplies..hmm du = 1/3*(2x + 4)dx => 3*du = (2x + 4)dx

  9. zepdrix
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I'm pretty sure you need to either do a Trig-Sub, or Integration-By-Parts might also be possible. No U-Sub available though :( Have you learned either of those methods yet?

  10. jennychan12
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yeah the substitution method.

  11. zepdrix
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Trig subs? :D

  12. jennychan12
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i think so? remind me what that is?

  13. Kainui
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I think you might want to add and subtract +4 and -4 under the cube root so that you can factor.

  14. AtiFS
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    google the concept behind it :)

  15. beginnersmind
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    idk how to do this, I'm just posting so that I get notified when someone answers it.

  16. Kainui
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I could reduce it down so that it becomes \[2^{3/5}\int\limits_{}^{}\tan^{3/5} \theta \sec \theta d \theta\] after making the substitution: \[(x+2)=2\sec \theta\]

  17. Kainui
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    the fraction should be 5/3 not 3/5 on the 2 and tan(theta)

  18. AtiFS
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    this link will help you :) http://www.the-mathroom.ca/freebs/cali3/cali3.htm

  19. Kainui
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I can't seem to crack it. You're in calculus 1 or 2?

  20. jennychan12
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1

  21. jennychan12
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    where did the tangent, secant stiff come from?

  22. zepdrix
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Ah sorry I was busy :C Kanoo been helping you? c:

  23. Kainui
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I was doing trigonometric substitution, but you don't learn that until cal 2. If there's an easier way with just using u-sub then I would be surprised! Good luck zeppy! =P

  24. zepdrix
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Ya I dunno sorry Jenny :c This doesn't seem like a problem you should be doing yet, hmm.

  25. Kainui
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Check this out: http://www.wolframalpha.com/input/?i=(x%5E2%2B4x)%5E1%2F3dx&t=crmtb01 I've never even heard of that stuff. Hypergeometric function? lol

  26. zepdrix
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Woah that looks fun :O

  27. jennychan12
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    oy.....! -_-

  28. cinar
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1355977140299:dw|

  29. cinar
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1355977229842:dw|

  30. cinar
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1355977363994:dw|

  31. cinar
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    the last sub. should be u=2cosht

  32. cinar
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    @satellite73 @Zarkon

  33. cinar
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    http://www.wolframalpha.com/input/?i=%28sinht%29^%285%2F3%29dt

  34. cinar
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I do not have enough information to solve this question..

  35. jennychan12
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    g is the antiderivative function if g(5) = 7, then g(1) = ?

  36. cinar
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    why are giving this info now, you should mention this at the beginning.. come on..

  37. cinar
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1355996811040:dw|

  38. cinar
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    http://www.freemathhelp.com/forum/archive/index.php/t-49380.html?s=81349e7c156e89af0e48100743b7ef6d

  39. cinar
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    http://www.wolframalpha.com/input/?i=integrate+%28x^2%2B4x%29^%281%2F3%29dx+from+x%3D1+to+5

  40. jennychan12
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    thanks for trying to help. :)

  41. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.