It's from the days before sqrt accepted a precision parameter. Should
almost certainly be deprecated. Also, one has the oddness that
sage: numerical_sqrt(3)
sqrt(3)
http://trac.sagemath.org/sage_trac/ticket/5404
- Robert
On Feb 28, 2009, at 1:06 AM, Rolandb wrote:
>
> Hi, what is the use of
That works.
Thanks!
Dave
On Feb 26, 5:31 pm, Alex Raichev wrote:
> Hi Dave:
>
> I'm also just learning the basics of interacting with Singular through
> Sage. So probably someone else on the list can answer your question
> better than me. Still, i'll take a stab at it.
>
> Carrying on with y
On Sat, Feb 28, 2009 at 3:06 AM, Foadi, James wrote:
>
> I have done that.
> This time I get the following message:
I have to say that logging in Sage was as far as I know never designed
to be something you could just read back in like you're trying to do.
You might want to look into sage_sessi
Thank you very much !
Loïc
Le samedi 28 février 2009 à 02:37 -0800, Rolandb a écrit :
> This works:
>
> f=arccos((1-x^2)/(1+x^2))
> g=f.diff(x)
> g.simplify_full()
> 2*x/((x^2 + 1)*abs(x))
>
> In general: type g. TAB and you will find all kind of handy functions.
>
> Roland
>
> On 28 feb, 10
This works:
f=arccos((1-x^2)/(1+x^2))
g=f.diff(x)
g.simplify_full()
2*x/((x^2 + 1)*abs(x))
In general: type g. TAB and you will find all kind of handy functions.
Roland
On 28 feb, 10:58, Loïc wrote:
> Hello
>
> Another problem:
> I want the derivative for the function arccos((1-x^2)/(1+x^2))
Hello
arctan(2)+arctan(5)+arctan(8)=5*pi/4.
How can I simplify arctan(2)+arctan(5)+arctan(8) to get this value?
Thanks in advance
Loïc
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Hello
Another problem:
I want the derivative for the function arccos((1-x^2)/(1+x^2))
I wrote:
f=arccos((1-x^2)/(1+x^2))
f.diff(x)
-(-2*x/(x^2 + 1) - 2*x*(1 - x^2)/(x^2 + 1)^2)/sqrt(1 - (1 - x^2)^2/
(x^2 + 1)^2)
The best answer would be:
2/(1+x^2)*sign(x)
How can I simplify this expression to
Hi, what is the use of this function? It seems equivalent to sqrt.
Roland
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I have done that.
This time I get the following message:
--
| Sage Version 3.2.3, Release Date: 2009-01-05 |
| Type notebook() for the GUI, and license() for information.|
-
