fixed at http://trac.sagemath.org/sage_trac/ticket/8487
R.M. On 9 bře, 05:26, Markus <[email protected]> wrote: > Hi, > > when trying to compute the intersection points of 2 circles i got > strange results. > > Example 1: > > c1(x,y)=(x-5)^2+y^2-25; c2(x,y)=(y-3)^2+x^2-9 > solve([c1(x,y)==0,c2(x,y)==0],x,y) > > produces the expected result: > > [[x == (45/17), y == (75/17)], [x == 0, y == 0]] > > Example 2: > (circle 1 smaller) > > c1(x,y)=(x-5)^2+y^2-16; c2(x,y)=(y-3)^2+x^2-9 > solve([c1(x,y)==0,c2(x,y)==0],x,y) > > produces the unexpected result: > > [] > > whereas intersection points do exist, e.g. > x=(-9(sqrt(55)-15)/68, y=(-3(sqrt(55)-41)/68 > > Is it because Example 1 has a rational result, whereas Examples 2 has > an irrational one? > > Thanks for any help. > > Markus -- To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
