Please help me solve this
Q: is the midpoint from directrix to C the focus?
determine the equation and graph of the ellipse w/ center at (4,-5), major axis vertical. eccentricity=√21/5 distance between directrices=50√21/21
(note: distance from C to a directrix = a/e or a2/c) note (e = c / a)
Thanks in advance for the reply ^^