What is the constant sum of the distances of any point on an ellipse from its two foci?

MATHEMATICS · Single correct · AP · AP Precalculus · Functions with Parameters, Vectors, and Matrices · Functions with Parameters, Vectors, and Matrices

Problem

What is the constant sum of the distances of any point on an ellipse from its two foci? (a) 2b2b (b) a+ba+b (c) 2a2a (d) 2c2c

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