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JEE MATHEMATICS MCQ: SEQUENCE OF SERIES

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Analyzing +4 | -1
The maximum value of x2yx^2 y, subject to constraints x+y+2x2+2xy+3y2=kx+y+\sqrt{2 x^2+2 x y+3 y^2}=k (constant), x,y≥0x, y \geq 0 is
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Correct option: B
4k3(3+15)3\frac{4 k^3}{(3+\sqrt{15})^3}
Option B is correct because it uses AM-GM inequality to find the maximum value of the expression under the given constraint.

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