*To*: mathgroup@smc.vnet.net*Subject*: [mg10805] nasty integrals that Mathematica can't do*From*: "Burn Microsoft...Burn!" <psalzman@landau.ucdavis.edu>*Date*: Thu, 5 Feb 1998 00:58:50 -0500

Hi there In my research, i've come up with the following integral: Integrate[ CosIntegral[a x] Cos[b x], {x,0,Infinity} ] Gradshteyn and Ryzhik have this integral, but apparently, Mathematica 3.0.1 can't do it. My question: Is there a way to "teach" Mathematica how to do a particular type of integral? Can I somehow plug G+R's solution in Mathematica? Pete -- Never criticize a man till you've walked a mile in his shoes. That way, you'll be a mile away from him and have his shoes as well. -=><=-+-+-=><=-+-+-=><=-+-+-=><=-+-+-=><=-+-+-=><=-+-+-=><=-+-+-=><=-+-+-=><=- Do you hate spam? Join the Coalition Against Unsolicited Commercial Email (CAUCE) at http://www.cauce.org. Actions speak louder than words. Join Today! I BOYCOTT ANY COMPANY THAT USES MASS ADVERTISING ON THE INTERNET