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/