What happens when the second derivative is undefined?

Author Question: What happens when the second derivative is undefined? (Read 1253 times)

federox

Sr. Member
Posts: 308

on: Jun 18, 2013

I know if the first derivative is undefined there's a potential cusp, or vertical asymptote. But how about when the second derivative is undefined? Is it still the same rules?

curlz

Hero Member
Posts: 538

Reply #1 on: Jun 18, 2013

When the second derivative is undefined that means there is a vertical inflection point and so it is undefined -- or better yet, fails to exist.

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