Barton Willis wrote:
> Here is an expression e for which radcan(radcan(e)) # radcan(e). I'd
> call this a bug:
>
> (%i391) ((-x-1)^(-bb-aa-2)*(x+2)^aa)/(((x+2)/(x+1))^aa*(1/(x+1)-(x+2)/(x
> +1)^2)*(1-(x+2)/(x+1))^bb);
> (%o391) ((-x-1)^(-bb-aa-2)*(x+2)^aa)/(((x+2)/(x+1))^aa*(1/(x+1)-(x+2)/(x
> +1)^2)*(1-(x+2)/(x+1))^bb)
>
> (%i392) radcan(%);
> (%o392) -(x+1)^aa/(-x-1)^aa
>
> (%i393) radcan(%);
> (%o393) -1/(-1)^aa
>
>
> Barton
>
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for what it is worth, commercial macsyma gets 2 different answers, but
the second one is
- (%e)^( - %i * %pi * aa)
its a bug, I think.
RJF