4?????
An ellipse with axes parallel to OX & OY cuts the parabola y2 = 4x at (1,-2)
& touches it at (4,4) , the coordinates of the other points of intersection is
(A) (9,-6)
(B) (9,6)
(C) (4,-4)
(D) (1,-2)
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UP 0 DOWN 0 0 2
2 Answers
11A).
Use the fact that the biquadratic will have a double root at pt. of touching, and \sum{y_i}=0 where y_i are the ordinate values of pt. of intersection.