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- Feb 4th 2010, 06:32 PMredcherryuse limit definition to prove that the limit is correct
- Feb 5th 2010, 04:33 AMHallsofIvy
Have you tried anything at all? This is just about the easiest problem you are ever going to have!

The "limit definition" you refer to is:

if and only if, for every there exist such that if then .

Here f(x) is the constant function, 3 and L= 3 so for all x, |f(x)-L|= |3-3|=0. What does that tell you?