On 10 mai, 23:33, Jason Grout <[EMAIL PROTECTED]> wrote:

> Could you post the code that you have and explain what you are trying to
> do with it?

Well I did it this morning. This is what I was triing to do:

sage: def creer_droite_h(a,b):
....:     if a>b:
....:         return creer_droite_h(b,a)
....:     if b==Infinity:
....:         y=line([(a,-2), (a,2)])
....:         return plot(y,a-2,a+2)
....:     centre=(a+b)/2
....:     rayon=b-centre
....:     y = lambda x:sqrt(rayon^2-(x-centre)^2)
....:     return plot(y,a,b)
....:

Thanks for the help!
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