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Re: Replacement Rule

After your rule is applied ONCE, there is no "logo" head in the expression
so replcement cannot take place again

Replace it to
logo[a b c d] //. {logo[x_ y_] :> Log[x] + logo[y], logo[x_] :> Log[x]}
(logo[a b c d] //. logo[x_ y_] :> Log[x] + logo[y]) /. logo[x_] :> Log[x]
to get the result you need
On 9/22/05, Amir <z64043 at> wrote:
> In: logo[a b c d] //. logo[x_ y_] :> Log[x]+Log[y]
> Out: Log[a]+Log[b c d]
> Shouldn't the correct answer be( Log[a]+Log[b]+Log[c]+Log[d]) ????
> Amir

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