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F is a mistake?

Posted by tju_rhythm at 2006-08-27 13:17:31 on Problem 2988

e(x) = 1 - |sgn(x)| 
is always 0
is it correct?
it maybe a mistake about problem~~

Followed by:

Re:F is a mistake? (121) tju_rhythm 2006-08-27 13:17:56
- who told you that it's always 0? (32) frkstyc 2006-08-27 13:20:36
  - Re:who told you that it's always 0? (25) tju_rhythm 2006-08-27 13:24:37

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