142 reputation
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location Israel
age
visits member for 2 years, 4 months
seen Oct 27 '13 at 7:30

Internet Explorer is the ugliest browser, created by geniuses. They have to be to get everything going wrong.


Jul
31
accepted Variable Substitution
Jul
4
comment Variable Substitution
I'm sorry for not being clear enough. The direction is left-to-right and the goal is to convert the left side to polar coordinates.
Jul
4
revised Variable Substitution
added 2 characters in body
Jul
4
asked Variable Substitution
May
21
comment Solving ODE with substitution
Thank you very much! That is it. I spent about 3 hours trying to get what is wrong, solving again and again. I didn't notice, the asked solution may be implicit. Anyway, I am glad to know I was right. Thank you very much again!
May
21
accepted Solving ODE with substitution
May
21
asked Solving ODE with substitution
Apr
23
awarded  Scholar
Apr
23
accepted Finding a geodesic on a plane using polar coordinates
Apr
23
comment Finding a geodesic on a plane using polar coordinates
Thank you very much. Could you please explain, how do I make this conversion? Or maybe you could point at some good material?
Apr
23
asked Finding a geodesic on a plane using polar coordinates
Apr
23
comment Solving geodesic problems with Euler-Lagrange equation
@copper.hat The geodesic lies on the same plane as earth center, but the latitude slices the sphere parallel to equator. Logically, it is clear that the distance is maximal at $\frac{\alpha}{2}$, but it needs to be proved. If I'm not that clear - you could check out the link in the post. There's the full explanation.
Apr
23
awarded  Supporter
Apr
23
comment Solving geodesic problems with Euler-Lagrange equation
@copper.hat Yes. But the question is what is the maximal distance between geodesic and latitude lines.
Apr
23
comment Solving geodesic problems with Euler-Lagrange equation
@AlexanderNikolasGruber I had edited the post.
Apr
23
awarded  Editor
Apr
23
revised Solving geodesic problems with Euler-Lagrange equation
added 267 characters in body
Apr
23
awarded  Student
Apr
23
asked Solving geodesic problems with Euler-Lagrange equation