Re: Simple Concept I can't figure out! Making rules?
- To: mathgroup at smc.vnet.net
- Subject: [mg38132] Re: [mg38046] Simple Concept I can't figure out! Making rules?
- From: Vladimir Bondarenko <vvb at mail.strace.net>
- Date: Tue, 3 Dec 2002 04:34:16 -0500 (EST)
- In-reply-to: <200211281907.OAA23937@smc.vnet.net>
- References: <200211281907.OAA23937@smc.vnet.net>
- Reply-to: Vladimir Bondarenko <vvb at mail.strace.net>
- Sender: owner-wri-mathgroup at wolfram.com
snarten at runbox.com (Stan) wrote on Thursday, November 28, 2002, 3:07:35 PM :
S> here is my problem:
S> Lets say you solve an equation using "Solve"
S> Solve[2x - 1 == 0, x] // N
{{x ->> 0.5}}
S> How would I then use the result of "Solve" (0.5) and assign it to a
S> new variable, like "answer" for further calculations?
Just use [[...]] (or its prefix equivalent, Part) to select a part of the
output you want to use for your further calculations.
In[1] := answer = (Solve[2x - 1 == 0, x] // N)[[1, 1, 2]];
In[2] := answer^2
Out[2] = 0.25
Best wishes,
Vladimir Bondarenko
Mathematical and Production Director
Symbolic Testing Group
http://www.CAS-testing.org/ GEMM Project (95% ready)
Email: vvb at mail.strace.net
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