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anonymous

  • 5 years ago

Help!! Im a little stuck.. I need to decompose this into partial fractions:

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  1. anonymous
    • 5 years ago
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    \[(2x^2-11x+5)/(x-3)(x^2+x-4)\]

  2. Hero
    • 5 years ago
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    What course are you currently taking?

  3. anonymous
    • 5 years ago
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    This is Pre-Calc Hero

  4. Hero
    • 5 years ago
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    Okay, just wondering.

  5. anonymous
    • 5 years ago
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    Then I use A/(x-3)+B(x^2+x-4)

  6. Hero
    • 5 years ago
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    What textbook are you using for the course?

  7. anonymous
    • 5 years ago
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    Precalculus: Graphs and Models by Addison Wesley

  8. Hero
    • 5 years ago
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    Thanks

  9. anonymous
    • 5 years ago
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    Its pretty old. 1997

  10. Hero
    • 5 years ago
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    That's okay. Sometimes, old is better.

  11. anonymous
    • 5 years ago
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    Okay. I mean its probably all the same techniques, for the most part.

  12. Hero
    • 5 years ago
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    What edition?

  13. Hero
    • 5 years ago
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    Well, nevermind. I'll get get the latest edition.

  14. anonymous
    • 5 years ago
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    Ok I wasnt sure. I dont know if it says it for sure.

  15. Hero
    • 5 years ago
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    If you have the book, it will say what edition it is. You just have to look, but okay.

  16. Hero
    • 5 years ago
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    I have about 9 min left before it finishes downloading

  17. anonymous
    • 5 years ago
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    I really dont see it at all :O This is the exact book though http://www.abebooks.com/book-search/isbn/0201694425/hard-cover/

  18. anonymous
    • 5 years ago
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    Ok thats fine. Thanks

  19. Hero
    • 5 years ago
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    If you want to show someone a book, use amazon.com

  20. anonymous
    • 5 years ago
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    ahh alright.

  21. Hero
    • 5 years ago
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    Yes, that version is very old. It's not even available for download. It's the first edition apparently

  22. Hero
    • 5 years ago
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    4 minutes left..

  23. anonymous
    • 5 years ago
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    ok

  24. Hero
    • 5 years ago
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    If you have the book, is there any reason why you are not able to understand this concept?

  25. anonymous
    • 5 years ago
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    I get the concepts down sort of, I just end up with the wrong numbers. I either do a step too early or Im not doing it completely right. I just want to make sure I understand it

  26. Hero
    • 5 years ago
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    Okay, I will have a look here in about 15 secs

  27. anonymous
    • 5 years ago
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    Ok Ill go through with what Im doing and you can maybe see what Im doing wrong

  28. anonymous
    • 5 years ago
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    Let me know when its done

  29. Hero
    • 5 years ago
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    It might take me a bit to figure this out.

  30. anonymous
    • 5 years ago
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    Ok thats fine!

  31. Hero
    • 5 years ago
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    Okay, I see something similar to this where it talks about setting up a decomposition template.

  32. anonymous
    • 5 years ago
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    Its in a lesson called Partial Fractions in my book

  33. anonymous
    • 5 years ago
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    That sounds right though

  34. Hero
    • 5 years ago
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    \[\frac{2x^2 - 11x+5}{(x-3)(x^2+x-4)} = \frac{A}{x-3} + \frac{Bx + C}{x^2 + x -4}\]

  35. Hero
    • 5 years ago
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    Maybe that's what you're looking for.

  36. anonymous
    • 5 years ago
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    So then its \[A(x^2+x-4)+(x-3)(Bx+C)=2x^2-11x+5\]

  37. Hero
    • 5 years ago
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    What I posted is in your book so it is correct. If what you posted is the next step, then by all means, go right ahead, but maybe someone else can take a look at that for you.

  38. anonymous
    • 5 years ago
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    Ok thats cool. I needed that for sure so thanks a lot Hero

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