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2015-04-15 13:31:13 -0500 received badge  Notable Question (source)
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2014-10-01 02:50:04 -0500 commented answer plotting points

I made some changes (that I did wrong in pointing out circles), and now your idea for points works perfectly. thank you

2014-10-01 01:47:49 -0500 commented answer plotting points

but it doesn't work for lager r (when r=2,3,4)

2014-09-30 15:39:54 -0500 commented question plotting points

also I don't know why I get four, and not two solutions for points

2014-09-30 14:24:22 -0500 received badge  Editor (source)
2014-09-30 14:22:38 -0500 asked a question plotting points

How can I show points that I get as the result in line 11? I have that two circles, but I do not know how to get points on the graph.

var('x, y')
ft = (x+1)^2-(y)^2-1
f=circle((-1,0), 1)
p = plot(f,-5,5, thickness=2)

def _(r=(1..4)):
  g = circle((1,0), r)
  pt = plot(g,-5, 5, color='green', thickness=2)
  gt= (x-1)^2+ y^2-r
  pot = solve([ft,gt], x, y)
  show(  p + pt, ymin = -5, ymax = 4)
2014-09-26 03:24:54 -0500 received badge  Student (source)
2014-09-25 10:36:03 -0500 commented answer Sage Notebook vs. Sage Cloud

thank you!

2014-09-25 10:17:01 -0500 received badge  Scholar (source)
2014-09-25 09:22:10 -0500 asked a question Sage Notebook vs. Sage Cloud

What is the difference between Sage Notebook and SageCloud? And can anybody give me a link or sugestion how SageCloud works (Where is the server? e.t.c)?