Drexel dragonThe Math ForumDonate to the Math Forum

Search All of the Math Forum:

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.

Math Forum » Discussions » sci.math.* » sci.math

Topic: Differentiability
Replies: 8   Last Post: Mar 1, 2013 6:22 PM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
William Elliot

Posts: 2,141
Registered: 1/8/12
Posted: Feb 20, 2013 11:13 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

A problem from

Suppose f(x)= e^(-1/x^2) for x not equal to 0, and f(0)=0.

Without using l'hopital's rule, prove f is differentiable at 0 and
that f'(0)=0.

Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© The Math Forum 1994-2015. All Rights Reserved.