showing a function bounded away from zero

From: novis <standshik@xxxxxxxxx>
Date: Sun, 4 May 2008 14:31:03 -0700 (PDT)

what is the general procedure to show that a function bounded away
from zero in a small(that can be chosen suitably) interval around
origin?
suppose my function is for some constant c>0
f(x)=exp(icx) where i is complex number.
.

Follow-Ups:
- Re: showing a function bounded away from zero
  - From: craig
- Re: showing a function bounded away from zero
  - From: Jannick Asmus

Prev by Date: Re: Combinatoric Problem
Next by Date: Re: showing a function bounded away from zero
Previous by thread: Third CEU Summerschool on Advanced Statistics and Data Mining (June 30th-July 11th, 2008)
Next by thread: Re: showing a function bounded away from zero
Index(es):
- Date
- Thread