Re: mathematica errors
- To: mathgroup at smc.vnet.net
- Subject: [mg94695] Re: [mg94655] mathematica errors
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Sat, 20 Dec 2008 06:23:13 -0500 (EST)
- Reply-to: hanlonr at cox.net
$Version
7.0 for Mac OS X x86 (64-bit) (November 11, 2008)
Returns unevaluated:
Integrate[1/(1 + (Tan[x]^Sqrt[2])), {x, 0, Pi/2}]
Integrate[1/(Tan[x]^Sqrt[2] + 1), {x, 0, Pi/2}]
soln = NIntegrate[1/(1 + (Tan[x]^Sqrt[2])), {x, 0, Pi/2}]
0.785398
Pi*RootApproximant[soln/Pi]
Pi/4
Bob Hanlon
---- alan2 <hong_alan at smc.edu> wrote:
=============
A few years ago I evaluated Int(0,pi/2,1/[1+(tan(x)^sqrt(2))] with mathematica and got a beautiful but wrong answer. If you ask it to approximate it numerically it gives the correct approximation of pi/4. Have they corrected this and what is going on?
--
Bob Hanlon