(address . bug-gnu-emacs@gnu.org)

In calc, doing `a s' simplifies "(1 + cos(x)^2 - 1) / cos(x)" to

"cos(x)^2 sec(x)", which contradicts an example in the tutorial on

rewrite rules.

Colin

- Con 4 Aug 2009 16:28
- Jon 5 Aug 2009 02:44
- Con 24 Oct 2009 21:27
- Jon 24 Oct 2009 22:47
- Jon 24 Oct 2009 22:58

J

(name . Colin Williams)(address . lackita@gmail.com)(address . jay.p.belanger@gmail.com)

87d47b2inv.fsf@gmail.com

Colin Williams <lackita@gmail.com> writes:

> In calc, doing `a s' simplifies "(1 + cos(x)^2 - 1) / cos(x)" to

> "cos(x)^2 sec(x)", which contradicts an example in the tutorial on

> rewrite rules.

So it does. Calc needs to simplify expressions with secant (and

cosecant and cotangent) better. I'll be out of town for the next week;

I'll fix it as soon as I get back.

Jay

C

(name . Jay Belanger)(address . jay.p.belanger@gmail.com)

87hbtoegn8.fsf@stupidchicken.com

Jay Belanger <jay.p.belanger@gmail.com> wrote:

> > In calc, doing `a s' simplifies "(1 + cos(x)^2 - 1) / cos(x)" to

> > "cos(x)^2 sec(x)", which contradicts an example in the tutorial on

> > rewrite rules.

> So it does. Calc needs to simplify expressions with secant (and

> cosecant and cotangent) better. I'll be out of town for the next week;

> I'll fix it as soon as I get back.

Hi Jay,

Did you get around to fixing this? If so, this bug should be closed.

J

(name . Chong Yidong)(address . cyd@stupidchicken.com)(address . jay.p.belanger@gmail.com)

87skd8msds.fsf@gmail.com

Chong Yidong <cyd@stupidchicken.com> writes:

...

>> > In calc, doing `a s' simplifies "(1 + cos(x)^2 - 1) / cos(x)" to

>> > "cos(x)^2 sec(x)", which contradicts an example in the tutorial on

>> > rewrite rules.

...

> Hi Jay,

>

> Did you get around to fixing this?

Yes.

> If so, this bug should be closed.

Sorry; I'll take care of it now.

Jay

J

Re: calc simplification problem

(address . 4031-done@debbugs.gnu.org)(address . jay.p.belanger@gmail.com)

87k4ykmrvh.fsf@gmail.com

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