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The value of lim(x →∞) xsin(π/4x)cos(π/4x) is : (A) π/4

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The value of lim(x →∞) xsin(π/4x)cos(π/4x) is :

(A) π/4

(B) π/2

(C) 0

(D) ∞

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Answer is (A) π/4

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