Let point (h, k) lies on x2 + y2 = 4 and point (2h + 1 , 3k + 2) lies on ellipse having eccentricity e. Then the value of 5 / e2 is ______.
Correct Answer :
Solution :
The correct answer is 9.
Given that the point lies on the circle , we have:
Let represent the coordinates of the point lying on the ellipse, such that:
and
We can express and in terms of and respectively:
Substituting these expressions into the equation gives:
Simplifying the denominators:
Dividing the entire equation by 4, we obtain the standard equation of the ellipse:
Comparing this with the general equation of a shifted ellipse , we identify the parameters:
Since , the ellipse is vertically oriented, and the relation for its eccentricity is given by:
Substituting the values of and :
Finally, calculating the required value:
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