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MathGroup Archive 2001

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Re: Integrate[Sqrt[Tan[x]], {x, 0, 1}] -- approx ??

  • To: mathgroup at smc.vnet.net
  • Subject: [mg29998] Re: [mg29978] Integrate[Sqrt[Tan[x]], {x, 0, 1}] -- approx ??
  • From: BobHanlon at aol.com
  • Date: Sat, 21 Jul 2001 00:49:05 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

In a message dated 2001/7/20 3:36:52 AM, bendoftimeb at stny.rr.com writes:

>How do I just get the approx. of this, say 5 decimal places?
>Mathematica gives an exact answer which is in terms of multiple
>fractions, roots, and complex numbers.
>
>According to my TI-85, it is approx. 0.7273
>

See the on-line help for the functions N and Chop

Integrate[Sqrt[Tan[x]], {x, 0, 1}] // N // Chop

The "See also" for the on-line help for Integrate points to NIntegrate

NIntegrate[Sqrt[Tan[x]], {x, 0, 1}] 


Bob Hanlon
Chantilly, VA  USA


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