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A set of lines x+y-2+lambda_(1)(2x+y-3)=0 represents incident rays on ellipse S=0 and 2x+3y-23+lambda_(2)=0 represents the set of refelction rays from the ellipse where lambda_(1), lambda_(2) in R. If P(3,7) is a point on the ellipse normal at which meets the major axis at N. |
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Answer» Elecentriciy of ELLIPSE is `SQRT((5)/(2sqrt(5)+1))` |
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