In: Math
For the ellipse 6? 2 + 4? 2 = 36, find the eccentricity and sketch the graph showing all main features including axis intercepts, foci and directrices.
b) Using exclusively some part of your answer to part a), determine the foci and directrices for the curve: (? + 2) 2 6 + (? − 3) 2 9 =