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Math Help - Finding constants to make function continuous

  1. #1
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    Finding constants to make function continuous


    Please help!
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  2. #2
    Rhymes with Orange Chris L T521's Avatar
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    Quote Originally Posted by Neverending View Post

    Please help!
    You want to make sure that you satisfy these conditions:

    \lim_{x\to-9^-}f\left(x\right)=\lim_{x\to-9^+}f\left(x\right)

    and

    \lim_{x\to7^-}f\left(x\right)=\lim_{x\to7^+}f\left(x\right)

    What will then happen is this: You will have generated a system of equations, and now you can easily solve for a and b.

    Can you try to take it from here?
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  3. #3
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    chris said the same thing
    Last edited by skeeter; January 3rd 2009 at 05:18 PM. Reason: too slow
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  4. #4
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    i generated the equations : 8=-9x + b and -8=7x + b and found b to be -1.

    However, I do not know how to find a.. =[



    EDIT: I think I got it.. I got a and b to both equal -1.

    Is that correct?
    Last edited by Neverending; January 3rd 2009 at 05:25 PM. Reason: found answer
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  5. #5
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    Quote Originally Posted by Neverending View Post
    i generated the equations : 8=-9x + b and -8=7x
    should be 8 = -9a + b and -8 = 7a + b
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  6. #6
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    OOO!! That's why I had problems.. now I see it! Thanks so much
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