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Definite integral to indefine one

  1. Nov 1, 2012 #1
    Hi
    I would like to know what is the procedure to convert indefinite integral to definite one?
    For example I know ∫exp(-u^2)du from 0 to x is equal to ∫x*exp(-x^2*t^2)dt from 0 to 1
    But I would like to know with what type of change of variable I get these?
     
  2. jcsd
  3. Nov 1, 2012 #2

    lurflurf

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    Homework Helper

    clearly
    u=x t
     
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