Re: Defining Solve results as variable
- To: mathgroup at smc.vnet.net
- Subject: [mg70059] Re: Defining Solve results as variable
- From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
- Date: Sun, 1 Oct 2006 04:10:34 -0400 (EDT)
- Organization: The Open University, Milton Keynes, UK
- References: <eflebs$deg$1@smc.vnet.net>
Diana wrote:
> Hi,
>
> I am trying to write a program which defines a variable with the
> results of a Solve equation.
>
> So, if I write
>
> Solve[x+1=2,x]
>
> I get {{x -> 1}}
>
> I have not been able to figure out how to define a variable to the
> result, so that if I then type
>
> x1 = %, for example, it defines x1 as 1.
>
> I know this must be simple, but I didn't find it in the Help material.
>
> Thanks in advance,
>
> Diana
>
Hi Diana,
In[1]:=
sols = Solve[x + 1 == 2, x]
Out[1]=
{{x -> 1}}
In[2]:=
x1 = x /. sols[[1]]
Out[2]=
1
Have a look at the following links:
http://documents.wolfram.com/mathematica/book/section-1.4.2
http://documents.wolfram.com/mathematica/book/section-1.5.7
Regards,
Jean-Marc