Re: Some assistance from seasoned users.
- To: mathgroup at smc.vnet.net
- Subject: [mg124910] Re: Some assistance from seasoned users.
- From: David Reiss <dbreiss at gmail.com>
- Date: Sun, 12 Feb 2012 04:59:15 -0500 (EST)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
- References: <jh6k2n$jr9$1@smc.vnet.net>
Th Mathematica can do these integrals just fine. But you need to use the correct syntax for the expressions. Here they are Sin[x]^3/x and Sin[x]^3/x^3 Using a construct like sin^3[x] hast two problems. The "s" must be capitalized and the Sin[x] must be raised to the 3rd power not the Sin. Hope this helps. --David On Feb 11, 3:46 pm, "peter livingston" <peter.livings... at cox.net> wrote: > Folks! > > I have recently come to the pleasures of Mathematica from other popular but > very expensive programming methods that I, as a retiree, cannot afford. > > My specific question is this: why am I able to get Mathematica to do the > complete integral of sin(x)/x, but it refuses to do any of the other type s: > specifically sin^3[x]/x or sin^3[x]/x^3 over the half interval from zero to > infinity. (see page 449 of G & R Table of Integrals). > > It seems to suggest that throwing away my Gradshtein and Ryzhik is premature > in spite of the claims in the Mathematica "Mathematics and Algorithms" > manual. > > Peter Livingston