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Math Help - Finding rational function.

  1. #1
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    Finding rational function.

    c) Find the rational function with x intercepts at x=2 and x=-2, hole at x=1, vertical asymptote at x=-1 and P(0)=8.

    So far I have:

    P(x) = a(x-2)(x+2)(x-1)/(x+1)(x-1)


    Is this right so far? Now how do I find the value for P(0) = 8?
    Last edited by FatimaA; April 28th 2013 at 05:36 PM.
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  2. #2
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    Re: Finding rational function.

    Why have you put the denominator twice?
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  3. #3
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    Re: Finding rational function.

    Oh, typo, sorry. Ok now?
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  4. #4
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    Re: Finding rational function.

    It's correct so far. Now how can you find the value of a?
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  5. #5
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    Re: Finding rational function.

    Think I found it:

    P(x) = -2(x-2)(x+2)(x-1)/(x+1)(x-1)
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  6. #6
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    Re: Finding rational function.

    Correct, well done
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