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Re: How to simplify?

  • To: mathgroup at
  • Subject: [mg96258] Re: How to simplify?
  • From: Jennifer Eden <jennifereden.price at>
  • Date: Tue, 10 Feb 2009 05:52:43 -0500 (EST)
  • References: <gmp12n$c85$>

My apologies - I screwed up the original email. Here's the correct
code which fails to simplify properly. The first two lines are
designed to indicate what it ought to simplify to.

S[r_] := 1/2 r BesselJ[1, r];
D[S[r], {r, 2}] + 1/r D[S[r], r] + S[r] // FullSimplify
DSolve[y''[r] + 1/r y'[r] + y[r] == BesselJ[0, r], y[r],  r] //
FullSimplify  (* Note: y[r] instead of S[r] *)

Many thanks in advance,


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