Derivative
- To: mathgroup at smc.vnet.net
- Subject: [mg43698] Derivative
- From: "extrabyte" <extrabyte22 at libero.it>
- Date: Tue, 30 Sep 2003 16:42:53 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Hello! I have these functions (see http://mynotebook.supereva.it) g[x_,y_]:=(Exp[x-y]+1)^-1; theta[x_,y_]:=ArcCosh[x*y]; F[y_]:=NIntegrate[g[x,y]*Sinh[theta[x,y]]*(Cosh[theta[x,y]])^2,{x,y,+oo},Wor kingPrecision->15, AccuracyGoal->20, MinRecursion->3, MaxRecursion->10] I must now calculate: f[y_]:=Evaluate[D[F[y]],y] but Mathematica running..........