X 2 16 y 2 7 1 July 8, 2019 16 32 64 128 Tangents are drawn to the ellipse x 2 16 y 2 7 1 Let the foci of the ellipse x 2 16 y 2 7 1 and the hyperbola Let the foci of the ellipse x 2 16 y 2 7 1 A hyperbola is represented by the equation x 2 16 y 4 2 7 1 Đường elip x 2 16 y 2 7 1 Y = - x ^ 2 + 16