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Topic: Re: [mg7338] rules->function
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Andrei Constantinescu

Posts: 32
Registered: 12/7/04
Re: [mg7338] rules->function
Posted: May 30, 1997 1:10 AM
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On Tue, 27 May 1997, Lord of Darkness wrote:

> Hello All,
> If I solve a set of simultaneous equations and get a simple answer like
> zrule = z-> x^2 + y^2
> but I then want to evaluate
> fn[x_,y_] := z + some more stuff.....

you should try

fn[x_,y_] := z + some more stuff..... /. zrule

which means that the replacement will be made at evaluation

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