Me
Posts:
1,410
Registered:
1/23/16


Re: 1)Gottingen's Dorothea Bahns, Laurent Bartholdi, are you as dumb stupid and messy about Conics as Franz? Oval is the conic section, never ellipse
Posted:
Oct 6, 2017 3:11 PM


On Friday, October 6, 2017 at 10:43:35 AM UTC+2, Archimedes Plutonium wrote:
Ellipse:
> c_1X^2 + c_2Y^2  1 = 0
Right, Archie.
Sometimes you will find it written the following way:
x^2/a^2 + y^2/b^2 = 1 .
"The shape parameters a, b are called the semi major axis and semi minor axis."
Hint: "It follows from the equation that the ellipse is symmetric with respect to both of the coordinate axes and hence symmetric with respect to the origin."
Source: Wikipedia

