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Re: Integrate Bug?

  • To: mathgroup at
  • Subject: [mg13153] Re: [mg13123] Integrate Bug?
  • From: Carl Woll <carlw at>
  • Date: Mon, 13 Jul 1998 07:42:04 -0400
  • Sender: owner-wri-mathgroup at

Hi Ed,

I don't think this is a bug with Integrate. An indefinite integral
always contains an arbitrary constant, and so Mathematica is free to
choose to add  a complex constant.

A possible solution to your problem is to do a definite integration from
a to W, where your function F is zero when its argument is a. For
example, your function F is zero when W is zero, so

Integrate[test, {W,0,W}]

should return a function which is equivalent to F, as long as test has
no singularities on the integration contour. Unfortunately, test does
have a singularity between 0 and 1 for your choice of constants, so the
above doesn't work.

Carl Woll
Dept of Physics
U of Washington

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