Re: Re: Wrestling with Mathematica on Trig Simplification
- To: mathgroup at smc.vnet.net
- Subject: [mg32618] Re: Re: Wrestling with Mathematica on Trig Simplification
- From: "Ranit" <fink at ee.columbia.edu>
- Date: Thu, 31 Jan 2002 01:46:03 -0500 (EST)
- Organization: Columbia University
- References: <a1j768$r58$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Do you know a good book or site that teaches mathematica? "David Park" <djmp at earthlink.net> wrote in message news:a1j768$r58$1 at smc.vnet.net... > Steven, > > It isn't absolute necessary to write the definition this way. > > m[a_, b_][t_] := a Sin[t] + b Cos[t] > > In you initial posting you didn't define a and b as arguments of the > function at all. I think that is because you considered them as parameters > and t as the variable. Writing the above form cleanly separates the > parameters from the variable. > Also you can easily write the derivative with respect to the variable. > > m[a, b]'[t] > a Cos[t] - b Sin[t] > > But it is really a matter of taste and how you are going to use the > definition. > > David Park > djmp at earthlink.net > http://home.earthlink.net/~djmp/ > > > From: Poppo [mailto:rlsmith at his.com] To: mathgroup at smc.vnet.net > > > > > Why write m[a_,b_][t_] instead of m[a_,b_,t_]? > > > > > >