Problema Solution
distance between directrices 27;between foci 3.solve for the equation of an ellipse.
Answer provided by our tutors
a = sqrt(3 * 27/4) = 4.5
e = 1.5/4.5 = 1/3
b = sqrt(19)
Equation: 81x^2/4 + y^2/19 = 1
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