21 reputation
13
bio website
location
age
visits member for 1 year, 11 months
seen Nov 24 at 3:17

Oct
9
awarded  Notable Question
Jul
31
awarded  Popular Question
Jan
18
comment Finding the angle of rotation of an ellipse from its general equation and the other way around
What do $X$ and $Y$ equal?
Jan
17
comment Finding the angle of rotation of an ellipse from its general equation and the other way around
I do not really understand these transformation equations. GEdgar is right. I learned about ellipses in my trigonometry class and we only worked with ones aligned with axes.
Jan
17
revised Finding the angle of rotation of an ellipse from its general equation and the other way around
Changed it back to the original equation from the general form for all conics.
Jan
17
comment Finding the angle of rotation of an ellipse from its general equation and the other way around
I do not know what eigenvectors are and I don't see how the matrix correlates to the description of the ellipse.
Jan
17
awarded  Editor
Jan
17
revised Finding the angle of rotation of an ellipse from its general equation and the other way around
deleted 2 characters in body
Jan
17
asked Finding the angle of rotation of an ellipse from its general equation and the other way around
Jan
14
awarded  Student
Jan
13
comment What is the explicit equation that converts Cartesian coordinates to elliptical coordinates?
Elliptic coordinates. I am using it for Euler's three-body problem.
Jan
13
asked What is the explicit equation that converts Cartesian coordinates to elliptical coordinates?