Deriving Equation of an Ellipse Part 1

In this video I begin the derivation of the equation for an ellipse. I had to stop before the derivation was over so I continued it in a 2nd video • Deriving Equation of a... .

[@yt_bharat]

Thank you sir

[@krishnashots5003]

thanks sir I am from India

[@rossgurung2688]

I for one would solve it by using Pythagore formula as ya have drawn the vertical 90 degree. Far easier and simpler..

[@cjpat984]

where did you get 2a? reply asap

[@Phillydogaz1]

a is the distance from the center to a vertex, so 2a is the distance between the two vertices.

[@abdifatahshibrahim90]

2a is a positive distance because the distance has never being a negative

[@thecheerfulllgirl]

How d1+d2=2a ??
Please tell me..

[@Phillydogaz1]

the easiest way to see that relationship is to move the 2nd point (x,y) from the upper part of the ellipse to v2, then it's much easier to see how they are equal.

[@thecheerfulllgirl]

Ohh..thank you..