How do I get a numeric value from FindRoot[] ?
- To: mathgroup at smc.vnet.net
- Subject: [mg120794] How do I get a numeric value from FindRoot[] ?
- From: David Kirkby <david.kirkby at onetel.net>
- Date: Wed, 10 Aug 2011 06:47:21 -0400 (EDT)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
The output of FindRoot[] when trying to find a root is like:
{x -> 0.49454545}
How can I convert that list, into the number 0.49454545?
In[1]:= FindRoot[x+9,{x,-5}]
Out[1]= {x -> -9.}
In[2]:= Head[%]
Out[2]= List
I can't seem to find any "normal" operations on the list which give me
the number.
Dave
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