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posted by  jlj4838 on 9/6/2008 4:50:38 PM  |  status: Live  

Help finding the limit

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limit    x2 - 81 / 
x>9-
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Oracle
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posted by Altair on 9/6/2008 4:56:21 PM  |  status: Live
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Oracle
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posted by radne on 9/6/2008 4:57:47 PM  |  status: Live
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"thanks so much"
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Using the definition of |x-9| we can write this as a piecewise function


Factoring and simplifying




So our limit is
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