The 8th one

The 8th one the circle x2 + (y— = 4 is semi-major axis. Ifthe centre of the ellipse is at the origin and its axes are coordinate axes, then the equation ofthe ellipse is (a) 4x2+Y2—4 (b) x2+4y2=8 (c) 4x2 + 8 (d) x2+4y2=16 (201 8. The equation of the circle passing through the foci ofthe ellipse , and having centre at (O, 3) is (a) x2+y2—6y— (c) x2+y2 —6y—5=0 (b) x2+y2 —6y+7=0 (d) x2+y2

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