Re: Can I get ComplexExpand to really work?

*To*: mathgroup at smc.vnet.net*Subject*: [mg14580] Re: Can I get ComplexExpand to really work?*From*: Paul Abbott <paul at physics.uwa.edu.au>*Date*: Fri, 30 Oct 1998 03:07:47 -0500*Organization*: University of Western Australia*References*: <719f5p$lc6@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Topher Cawlfield wrote: For your example: > ComplexExpand[Integrate[E^(I a x^2), {x, -Infinity, Infinity}]] since you are assuming that 'a' is real and positive then you can use In[1]:= Integrate[E^(I*a*x^2), {x, -Infinity, Infinity}, Assumptions -> a > 0] Out[1]= Pi (1 + I) Sqrt[--] 2 ---------------- Sqrt[a] Cheers, Paul ____________________________________________________________________ Paul Abbott Phone: +61-8-9380-2734 Department of Physics Fax: +61-8-9380-1014 The University of Western Australia Nedlands WA 6907 mailto:paul at physics.uwa.edu.au AUSTRALIA http://www.physics.uwa.edu.au/~paul God IS a weakly left-handed dice player ____________________________________________________________________