Date: Mar 24, 2013 7:26 AM
Author: G. A. Edgar
Subject: Re: Handling branch cuts in trig functions

In article <kimdsn$lj3$1@speranza.aioe.org>, Nasser M. Abbasi
<nma@12000.org> wrote:


>
> I think now that answer to sqrt(sec(x)^2) should be
> |sec(x)| without need to give the branch.


That answer is incorrect for complex x ... so to get that answer in
Maple, you must assume x is real.

simplify(%) assuming x::real;

--
G. A. Edgar http://www.math.ohio-state.edu/~edgar/