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Int. by parts

  1. Apr 26, 2005 #1
    I forgot a little detail in the integration by parts formula
    Is it [itex]\int u \,dv = uv[/itex] + or - [itex]\int v \,du[/itex]
    I don't remember if its plus or minus.....
     
  2. jcsd
  3. Apr 26, 2005 #2
    Just remember that the integration by parts formula is deriviable from the formula for the product of a deriviatives.

    d(u * v) = u * dv + v * du.

    Now integrate both sides subtract int(v *du). Isn't math woinderful :-)
     
  4. Apr 26, 2005 #3
    Just remember that the integration by parts formula is deriviable from the formula for the product of a deriviatives.

    d(u * v) = u * dv + v * du.

    Now integrate both sides subtract int(v *du). Isn't math woinderful :-)
     
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