Re: Mixed derivative button on basic input palette
- To: mathgroup at smc.vnet.net
- Subject: [mg40680] Re: Mixed derivative button on basic input palette
- From: bobhanlon at aol.com (Bob Hanlon)
- Date: Sun, 13 Apr 2003 02:18:06 -0400 (EDT)
- References: <b78f7o$l07$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
If you look at the InputForm of your entry you will see D[x^3, x, y]*y^4 To keep x^3y^4 as a single entity you need to use parentheses, i.e., type (x^3y^4) to keep from escaping from the entry template. Bob Hanlon In article <b78f7o$l07$1 at smc.vnet.net>, wself at msubillings.edu (Will Self) wrote: << Subject: Mixed derivative button on basic input palette From: wself at msubillings.edu (Will Self) To: mathgroup at smc.vnet.net Date: Sat, 12 Apr 2003 07:28:56 +0000 (UTC) Would you try the mixed derivative button on your basic input palette and see if it works? Click on the button and put x and y in the two subscripts, then put x^3y^4 in the box to the right. I get 0, both in versions 4.0 and 4.2. It seems that the Wolfram people could have fixed this bug by now. Of course, the kernel is fine, and D[x^3y^4, x, y] gives the correct output 12x^2y^3. I hope I'm not flogging a dead horse. I did a search but found nothing on this. Thanks, Will >><BR><BR>