Re: Stupid simple question about counting derivatives
- To: mathgroup at smc.vnet.net
- Subject: [mg33475] Re: Stupid simple question about counting derivatives
- From: "Allan Hayes" <hay at haystack.demon.co.uk>
- Date: Fri, 22 Mar 2002 04:07:11 -0500 (EST)
- References: <a7crpm$hu8$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Jack: ax is one symbol, a*x and a x stand for the product of a and x. -- Allan --------------------- Allan Hayes Mathematica Training and Consulting Leicester UK www.haystack.demon.co.uk hay at haystack.demon.co.uk Voice: +44 (0)116 271 4198 Fax: +44 (0)870 164 0565 "Jack" <kielczew at poczta.onet.pl> wrote in message news:a7crpm$hu8$1 at smc.vnet.net... > How do I get Mathematica 2.2 to count the derivatives of the simplest > parametric functions, i.e. > > (ax)', where a is the parameter and x is the variable. I want to get: > > a > > (Hey, I said it was stupid). > > D[ax,x] gets me 0, Dt[ax,x] gets me Dt[ax,x] and I haven't figured out > how to use Constants and NonConstants. I'd be grateful for any help as > this simple problem is driving me crazy. > > > -- > Jacek Kie³czewski > kielczew at poczta.onet.pl > > > > >