MathGroup Archive 2008

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Deleting Integrate[] transformation rule

  • To: mathgroup at
  • Subject: [mg87564] Re: Deleting Integrate[] transformation rule
  • From: Jean-Marc Gulliet <jeanmarc.gulliet at>
  • Date: Sun, 13 Apr 2008 03:31:28 -0400 (EDT)
  • Organization: The Open University, Milton Keynes, UK
  • References: <ftq5ab$it$>

UHAP023 at wrote:

> When integrating Mathematica knows the result of D[EllipticF[phi,m, phi]] =
Syntax error: a square bracket is missing.

> 1/Sqrt[1-m*Sin[phi]^2]] and will produce expressions containing
> EllipticF[] in its result when it encounters such a pattern.  I want
> to prevent this -- that is Unprotect Integrate[] and make it forget
> this rule so that EllipticF[] will not appear in the result.

No need to do that: just use the correct syntax as in,

In[1]:= D[EllipticF[phi, m], phi]


Sqrt[1 - m Sin[phi] ]

-- Jean-Marc

  • Prev by Date: Re: Player Pro and Packages
  • Next by Date: waiting for pressed key and reading key
  • Previous by thread: Re: Possible bug in WAV export
  • Next by thread: Re: Deleting Integrate[] transformation rule