Luigi,
The simplification acos(cos(x)) => x is only valid when 0 <= x <= %pi, so
Maxima by default does not perform that simplification. (And unfortunately,
it is not clever enough to perform it when x is declared to be in that
range.)
To tell Maxima to perform that transformation regardless, use triginverses:
true$. Try
? triginverses
for documentation.
-s
On Mon, May 16, 2011 at 03:36, Luigi Marino <luigi_marino2 at alice.it> wrote:
> Maxima have many problems
> with trigonometric functions,
> it is not able to reduce
> acos(cos(x)) to x
> If you try all trig simplification
> acos(cos(x)) is never x
> Best
> Luigi Marino
>
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