This is the problem I need help with.

Here's a rough graph I drew of the function.

http://i28.tinypic.com/zu16he.jpg

I'm not sure if a tangent line can exist at x=0 if there isn't a limit there.

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- Sep 14th 2009, 08:31 AMRkerDoes a tangent line exist here?This is the problem I need help with.

Here's a rough graph I drew of the function.

http://i28.tinypic.com/zu16he.jpg

I'm not sure if a tangent line can exist at x=0 if there isn't a limit there. - Sep 14th 2009, 08:42 AMPlato