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Thread: Homework question.

  1. #1 Homework question. 
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    hi

    resolve (11-3x)/(x^2+2x-3) into partial fractions.
    after getting about 4 different answers i now get ( 2/(x-1)) - (5/(x+3)) is that it or do i need to do it again

    ta


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  3. #2  
    The Doctor Quantime's Avatar
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    Do it yourself.

    BB.


    "If you wish to make an apple pie from scratch, you must first invent the universe". - Carl Sagan
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  4. #3  
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    i have done it myself
    i show the question and the answer i got
    i just want to know if i have the right
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  5. #4  
    The Doctor Quantime's Avatar
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    Sorry about that, we've had a few users here wanting their homework doing, I thought that was the same due to your title.
    "If you wish to make an apple pie from scratch, you must first invent the universe". - Carl Sagan
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  6. #5  
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    If you plug in a value for x, like 2 for example, you get the same answer for both expressions, so I'd say you've got it.
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  7. #6  
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    (swiviller) oh thats no problem, if you cant answer the question, then in the nicest possible way, fuck off and annoy somebody else please :wink:


    thanks harold i just needed some reassurance.
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  8. #7  
    The Doctor Quantime's Avatar
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    If your reply was all fun and no offense meant thats ok.
    "If you wish to make an apple pie from scratch, you must first invent the universe". - Carl Sagan
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  9. #8  
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    if it looks like a swiviller and it can fit on my finger it can swivel hahahaha
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  10. #9  
    Forum Professor serpicojr's Avatar
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    I've gotta write that one down.

    And, yes, your answer is correct. One way of checking is to undo your work and add together the two fractions you get. You should get back the original expression.

    Harold14370's suggestion is good, too, although you would really have to check at least two points to make sure it's right: the denominators are clearly the same, so we just need to check that the linear factors on top agree, and two linear terms are the same if they agree at two points.

    Oh, and svwillmer, take a minute to figure out whether someone is just asking for answers or genuinely asking for help before accusing them of being lazy.
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  11. #10  
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    Thanks,

    maths is a real blind spot for me, struggling to keep up as well no matter how much time i spend on it. is there a secret or something im missing?
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