PPT Slide

x

y

(a,0)

(-a,0)

(0,b)

(0,-b)

? p, s1 + s2 = const. ? (x/a)2 + (y/b)2 = 1

(See follow-up exercise #6).

The Ellipse

f1

f2

s1

s2

p

P = any point on the ellipse

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