RE: Adding equations
- To: mathgroup at smc.vnet.net
- Subject: [mg14390] RE: [mg14342] Adding equations
- From: Daniel CLEMENT <dclement at mail.cpod.fr>
- Date: Sun, 18 Oct 1998 15:09:56 -0400
- Sender: owner-wri-mathgroup at wolfram.com
Lawrence, Thread[Plus[aû,cý],Equal] does what you want. You must instruct Thread to work with Equal; I think it is because Equal does not have the attribute 'Listable'. Look for the help on Thread; there is an example very similar to yours. Of course, you can replace Plus with Times or various other functions. Daniel CLEMENT > ----- Original Message ----- > From: Lawrence Walker [SMTP:lwalker701 at earthlink.net] To: mathgroup at smc.vnet.net > Sent: Thursday, October 15, 1998, 6:28:46 > To: mathgroup at smc.vnet.net > Subject: [mg14342] Adding equations > > Group: > > I've been trying to add two equations as follows: > > In[4]:> aû; > In[5]:> cý; > In[6]:> %4+%5 > Out[6]> (aû)+(cý) > > The result I was looking for is (a+c)ÿb+d). The following works but it > seems clumsy. In[7]:> %4[[1]]+%5[[1]]ÿ4[[2]]+%5[[2]] Out[7]> a+cû+d > Is there a way to elegantly add (sub, mult, div) two equations? Also is > there an elegant way to add (sub, mult, div) an expression to both > sides of an equation? > > Lawrence Walker > > > ----- End Of Original Message -----