Re: Coefficient Question
- To: mathgroup at smc.vnet.net
- Subject: [mg104046] Re: Coefficient Question
- From: Thomas Dowling <thomasgdowling at gmail.com>
- Date: Sat, 17 Oct 2009 07:01:18 -0400 (EDT)
- References: <200910161104.HAA00732@smc.vnet.net>
Hello, A few examples (of many possibilities?): expr = Expand[8 (3 + 5 k + 4 x1 + 6 x2 + 45 x3)] Select[expr, NumericQ] or Select[expr, IntegerQ] or Select[expr, FreeQ[#, k | x1 | x2 | x3] &] Tom Dowling On Fri, Oct 16, 2009 at 12:04 PM, Scott <sguthery at gmail.com> wrote: > I've got the expression > > 8(3+5k+4x1+6x2+45x3) > > and I want to extract the constant 24. > > Yes, I can define a function and then set k and x1 and x2 and x3 to 0 > but there has to be easier way, no? > > Any suggestions? > > Thanks much. > > Cheers, Scott > >
- References:
- Coefficient Question
- From: Scott <sguthery@gmail.com>
- Coefficient Question