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Re: Help

• To: mathgroup@smc.vnet.net
• Subject: [mg11154] Re: Help
• From: Allan Hayes <hay@haystack.demon.co.uk>
• Date: Mon, 23 Feb 1998 21:41:12 -0500
• References: <6cnb8b$bit@smc.vnet.net>

Colin L C Fu wrote:

> I have 3 solutions for a which are
> {a -> 32, a -> -22, a -> 49}.
> 
> I want to use the positive answer to sub in a folowing equation.

Colin,

The following selects the first rule with positive right side.

In[1]:=
aList = Select[sols, #[[2]]>0&,1]

Out[1]=
{a -> 32}

-- 
Allan Hayes
Training and Consulting
Leicester, UK
hay@haystack.demon.co.uk
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