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Guyz please help me

  1. Apr 24, 2004 #1
    Guyz please help me !!

    hey! Could any of u plz help me with this question. Its for my general integration theory assigment.

    'Use an argumetn by contradiction to establish the following claim:
    If f is continuous on R and [tex]\int |f|= 0,then f = 0.[\tex]

  2. jcsd
  3. Apr 24, 2004 #2


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    Science Advisor

    Rough argument. If f is not 0 at some point, it must be not 0 in an interval around that point (continuity). Therefore the integral of |f| will be >0.
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