Dear Simon
Thank you. I did the same, but it states that an error. Note that I am
using sage cell .
Dr. K A. Venkatesh
Professor of Math and Computer Science,
Myanmar Institute of Information Technology
73rd Street, Ngu Shwe War, Chanmyathazi Township,
Mandalay, Myanmar
URL: www.miit.edu.mm
On Mon, Jun 24, 2019 at 1:20 PM Simon King wrote:
> Hi,
>
> On 2019-06-24, Prof K.A.Venkatesh wrote:
> > 1. how to enter cot(pi*x)?
>
> Did you try to type cot(pi*x) after the Sage prompt?
>
> The result is indeed cot(pi*x) as a symbolic expression. It can be
> evaluated by inserting special values for x (which is a pre-defined
> symbolic variable).
>
> A nice possibility (assuming that you do want to create a symbolic
> function based on cotangent function) is this:
> sage: f(x) = cot(pi*x)
> sage: f
> x |--> cot(pi*x)
> sage: f(3)
> Infinity
> sage: f(3/2)
> 0
> sage: f(3/4)
> -1
>
> Hope that I understood and answered your question.
> Best regards,
> Simon
>
>
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