simplification of (4-4*x^2)*sqrt(1-x^2)

• Subject: simplification of (4-4*x^2)*sqrt(1-x^2)
• From: Barton Willis
• Date: Sat, 11 Jul 2009 17:49:03 -0500

By the way, among other things, I tried rootscontract---yikes:

(%i26) rootscontract(%i/%pi);
(%o26) -%i/%pi

(%i27) rootscontract(%);
(%o27) %i/%pi

Barton

-----maxima-bounces at math.utexas.edu wrote: -----


>Automatically,?we?have?(1-x^2)?*?sqrt(1-x^2)?-->?(1-x^2)^(3/2),?but?I
>don't even know?of?a?command?that?crunches?(4-4*x^2)*sqrt(1-x^2)?-->
4?*?(1-x^2)^
>(3/2).?Is?there a?command?that?does?this?simplification?

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