Re: A question on C^infinity functions
- From: Robert Low <mtx014@xxxxxxxxxxxxxx>
- Date: Wed, 01 Mar 2006 20:19:38 +0000
TCL wrote:
For general C^\infty function f, define
g(x)= f(x)/x for x not equal 0, = 0 for x=0.
Use L'Hopital Rule to prove that g is C^\infty.
What if f(x)=1 for all x?
.
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