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Pusat(0,0), elips horizontal
c = 8
a = 10
b = √10^2-8^2 = √64 = 6
Persamaannya,
x^2/a^2 + y^2/b^2 = 1
x^2/100 + y^2/64 = 1
F(0,12) dan F(0,-12)
Pusat(0,0), elips vertikal
c = 12
a = 13
b = √13^2 - 12^2 = √25 = 5
Persamaannya (Untuk vertikal)
x^2/b^2 + y^2/a^2 = 1
x^2/25 + y^2/169 = 1