distributing sums



(%i2) declare(sum,linear)$

(%i3) sum((x[j]+y[j]+x[j]*y[j]),j,a,b);
(%o3) (sum(x[j]*y[j],j,a,b))+(sum(y[j],j,a,b))+sum(x[j],j,a,b)

Barton

maxima-bounces at math.utexas.edu wrote on 07/14/2007 11:44:10 AM:

> ~~~
> 
> How do I distribute a sun such that
> 
> sun((x[j]+y[j]+x[j]*y[j]),j,a,b) => 
> 
> sum(x[j],j,a,b)+sum(y[j],j,a,b)+sum(x[j]y[j],j,a,b);
> 
> 
> 
> Ed
> 
> ~~~
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