This is the problem I need help with. Here's a rough graph I drew of the function. I'm not sure if a tangent line can exist at x=0 if there isn't a limit there.
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Originally Posted by Rker [FONT=Times-Bold][SIZE=1][COLOR=#231a09]This is the problem I need help with. I'm not sure if a tangent line can exist at x=0 if there isn't a limit there. Your graph is really wrong.
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