Re: Simplify by Recurrence Relations
- To: mathgroup at smc.vnet.net
- Subject: [mg75791] Re: Simplify by Recurrence Relations
- From: CKWong.P at gmail.com
- Date: Thu, 10 May 2007 05:24:43 -0400 (EDT)
- References: <f1s3n1$h2g$1@smc.vnet.net>
ruleB = BesselJ[ n_ /; Positive[n - 1], z_] -> 2(n - 1)/z BesselJ[n - 1, z] - BesselJ[n - 2, z]; Example: BesselJ[4, z] //. ruleB D[BesselJ[2, x], x] //. ruleB