
Re: integration question: 1/(Sqrt[1  x^2])*Exp[(1  x)^2]
Posted:
Aug 5, 2013 4:26 PM


On 8/5/2013 3:11 PM, Axel Vogt wrote: > On 05.08.2013 21:58, Nasser M. Abbasi wrote: >> 1/(Sqrt[1  x^2])*Exp[(1  x)^2] > > Plot from 0 ... 1 and its imaginary part from 1 ... 4 > to understand the the problem >
Oh, a pole at x=1 ofcourse.
This explains why numerical integration worked (but lots of screaming from Mathematica along the way)
NIntegrate[1/(Sqrt[1  x^2])*Exp[(1  x)^2], {x, 0, Infinity}]
1.29331348557849  1.19124235143936 I
same with Maple's
int(1/(sqrt(1  x^2 ))*exp(( (1  x)^2)),x=0..infinity,numeric=true); 1.29721962103293  1.19514845220774 I
Ok. Sorry, I just overlooked this.
thanks, Nasser

