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Q.

The value of λ for which (λ,λ2) lies inside of the ellipse 4x2+9y2=36 and out side the parabola y2=x satisfy 

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a

0<λ<1

b

0λ1

c

0<λ<3613

d

λ[1,4]

answer is A.

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Detailed Solution

4λ2+9λ2+44λ36>013λ236λ<0λ(13λ36)>0λ0,3613(1)
And λ2+44λλ>0
λ25λ+4>0(λ1)(λ4)>0λ<1( or )λ>4(2)
From (1) and (2) 0<λ<1

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