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If I1 = ∫e^-xcos^2xdx for x ∈ [0, 1], I2 = ∫e^-x^2cosxdx or x ∈ [0, 1], I3 = ∫e^-x^3dx or x ∈ [0, 1],

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If I1 = ∫e-xcos2xdx for x ∈ [0, 1], I2 = ∫e-x^2cosxdx or x ∈ [0, 1], I3 = ∫e-x^3dx or x ∈ [0, 1], then:

(A) I2 > I3 > I1 

(B) I2 > I1 > I3 

(C) I3 > I2 > I1 

(D) I3 > I1 > I2

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Answer is (C) I3 > I2 > I1

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