Bill Allombert on Tue, 12 Jun 2012 12:08:11 +0200

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Re: Pari\Gp

On Tue, Jun 12, 2012 at 12:45:04PM +0300, Ahmad Kamal wrote:
> Hello
> I want to ask a question related to elliptic curves:
> Is there any method to compute the x coordinate if we have the y coordinate
> using pari\gp?

Yes, you can use factor/polroots/polrootsmod to find the solutions of the equation in x.