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Re: piecewise vs which

Peter Breitfeld wrote:
> Helen Read schrieb:
>>For purposes of teaching calculus students, 
>>where we are only concerned with real numbers and are not taking limits 
>>in the complex plane, I would like Limit to check from both directions.
> Why don't you write a little function to test the equality of both
> limits, like this:


My point was that I would like a *built-in* function for finding 
two-sided limits (along the real line) that would be easy for beginning 
calculus students to use.

Helen Read
University of Vermont

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