Re: Problems with Solve
- To: mathgroup at smc.vnet.net
- Subject: [mg17046] Re: Problems with Solve
- From: Jan Krupa <krupa at alpha.sggw.waw.pl>
- Date: Wed, 14 Apr 1999 02:11:57 -0400
- Organization: http://news.icm.edu.pl/
- References: <7es42r$cdb@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Tanveer Choudhury wrote: > I have an equation > eqn == rhs > > Solving in the following way > > Solve[eqn,x] > > the output is something like > > x->2.11 > > how do I save the value for x to someother variable... > > u can mail to tanveer at wam.umd.edu > > thanx Have a look at: http://www.mathematica.com/support/Kernel/Basic/UsingRuleSolutions.html e.g.: In[1]:=sol1=Solve[x^4-2==0,x] Out[1]={x -> -2^(1/4)}, {x -> -I*2^(1/4)}, {x -> I*2^(1/4)}, {x -> 2^(1/4)}} In[2]:=sol2=x/.sol1 Out[2]={-2^(1/4), -I*2^(1/4), I*2^(1/4), 2^(1/4)} In[3]:=x1=sol2[[3]] Out[3]=I*2^(1/4) In[4]:=x1^4 Out[4]=2 Jan