1.

Let E1 and E2 be two ellipses whose centers are in origin. The major axes of E1 and E2 lies along the x−axis and y−axis, respectively. Let S be the circle x2+(y−1)2=2.. The straight lin x+y=3 touches the curves S, E1 and E2 at P,Q and R, respectively. Supoose the PQ=PR=2√23.If e1 and e2 are the eccentricities of E1 and E2, respectively, then the correct expression(s) is(are)

Answer»

Let E1 and E2 be two ellipses whose centers are in origin. The major axes of E1 and E2 lies along the xaxis and yaxis, respectively. Let S be the circle x2+(y1)2=2.. The straight lin x+y=3 touches the curves S, E1 and E2 at P,Q and R, respectively. Supoose the PQ=PR=223.If e1 and e2 are the eccentricities of E1 and E2, respectively, then the correct expression(s) is(are)



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