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#1

$Old$ January 3rd, 2009, 07:07 PM

Neverending $Neverending is offline$

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$Default$ Finding constants to make function continuous

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#2

$Old$ January 3rd, 2009, 07:15 PM

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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

$Old$ January 3rd, 2009, 07:17 PM

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chris said the same thing

Last edited by skeeter; January 3rd, 2009 at 07:18 PM. Reason: too slow

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$Old$ January 3rd, 2009, 07:18 PM

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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 07:25 PM. Reason: found answer

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$Old$ January 3rd, 2009, 07:31 PM

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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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$Old$ January 3rd, 2009, 07:37 PM

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OOO!! That's why I had problems.. now I see it! Thanks so much

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