challenging integration
- To: mathgroup at smc.vnet.net
- Subject: [mg13323] challenging integration
- From: quartier at umnw.ethz.ch (Robin Quartier)
- Date: Mon, 20 Jul 1998 02:49:45 -0400
- Organization: ETH Zurich
- Sender: owner-wri-mathgroup at wolfram.com
Hi everybody.
I have a function defined as follow:
e2=ab/(a^2-b^2)*{t1*Cosh[b*x]-t2*Cosh[ax]-a*Sinh[bx]+b*Sinh[ax]}
t1 and t2 are defined as follow:
t1=a/Tanh[b*Pi]
t2=b/Tanh[a*Pi]
The parameters a,b are both positives.
x varies between 0 and Pi
I would like to calculate
Integrate[e2*Log[e2],x]
Mathematica seems to have some problems doing this. After hours, it
returns the result unevaluated.
If anyone as some spare time and fell like giving it a try...any help,
question and comments are welcomed!
Yours
Rob.