* bug#4031: calc simplification problem
@ 2009-08-04 14:28 Colin Williams
2009-08-05 0:44 ` Jay Belanger
0 siblings, 1 reply; 4+ messages in thread
From: Colin Williams @ 2009-08-04 14:28 UTC (permalink / raw)
To: bug-gnu-emacs
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
^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#4031: calc simplification problem
2009-08-04 14:28 Colin Williams
@ 2009-08-05 0:44 ` Jay Belanger
0 siblings, 0 replies; 4+ messages in thread
From: Jay Belanger @ 2009-08-05 0:44 UTC (permalink / raw)
To: Colin Williams; +Cc: 4031, bug-gnu-emacs
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
^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#4031: calc simplification problem
@ 2009-10-24 19:27 Chong Yidong
2009-10-24 20:47 ` Jay Belanger
0 siblings, 1 reply; 4+ messages in thread
From: Chong Yidong @ 2009-10-24 19:27 UTC (permalink / raw)
To: Jay Belanger; +Cc: 4031, Colin Williams
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.
^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#4031: calc simplification problem
2009-10-24 19:27 bug#4031: calc simplification problem Chong Yidong
@ 2009-10-24 20:47 ` Jay Belanger
0 siblings, 0 replies; 4+ messages in thread
From: Jay Belanger @ 2009-10-24 20:47 UTC (permalink / raw)
To: Chong Yidong; +Cc: 4031, Colin Williams
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
^ permalink raw reply [flat|nested] 4+ messages in thread
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2009-10-24 19:27 bug#4031: calc simplification problem Chong Yidong
2009-10-24 20:47 ` Jay Belanger
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2009-08-05 0:44 ` Jay Belanger
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