November 7th, 2008, 03:24 AM  #1 
Member Joined: Jul 2008 Posts: 88 Thanks: 0  a Limit question. 
November 7th, 2008, 04:28 AM  #2 
Senior Member Joined: Oct 2007 From: Chicago Posts: 1,701 Thanks: 3  Re: a Limit question.
As x>a? Or as x>0 If x is anything but but 0, 1/x^2 is welldefined. Look at the definition of a limit. I'm taking this straight of of Stewart 5e: So, f(x) = 1/x^2, and a = 0. We want to be able to choose, for each M, a delta such that: Can you find such a delta (relative to M)? 
November 7th, 2008, 01:26 PM  #3 
Senior Member Joined: Jul 2008 Posts: 895 Thanks: 0  Re: a Limit question.
Again, assuming 0 for "a", would not a study of fractions be sufficient? As the denominator decreases indefinitely, the value as a whole increases indefinitely.


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