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2020-12-28 19:11:36 +0200 received badge  Popular Question (source)
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2014-10-01 09:50:04 +0200 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 08:47:49 +0200 commented answer plotting points

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

2014-09-30 22:39:54 +0200 commented question plotting points

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

2014-09-30 21:24:22 +0200 received badge  Editor (source)
2014-09-30 21:22:38 +0200 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)

@interact
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)
  html('$tocke=\;%s$'%latex(pot))
  show(  p + pt, ymin = -5, ymax = 4)
2014-09-26 10:24:54 +0200 received badge  Student (source)
2014-09-25 17:36:03 +0200 commented answer Sage Notebook vs. Sage Cloud

thank you!

2014-09-25 17:17:01 +0200 received badge  Scholar (source)
2014-09-25 16:22:10 +0200 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)?