On 10/13/06, Patrick Gelin <patrick.gelin at free.fr> wrote:
>
> Hi,
>
> I simplified an expression and maxima show the result as -(b-a). I would
> like to display (a-b).
>
some examples that simplify with ratsimp. powerdisp settings may differ,
but ratsimp works in both cases.
lp
(%i1) powerdisp;
(%o1) false
(%i2) factor(b-a);
(%o2) b - a
(%i3) factor(a-b);
(%o3) - (b - a)
(%i4) ratsimp(%);
(%o4) a - b
(%i5) powerdisp:true;
(%o5) true
(%i6) factor(b-a);
(%o6) - a + b
(%i7) factor(a-b);
(%o7) - (- a + b)
(%i8) ratsimp(%);
(%o8) a - b