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Q)

If $f(x)=coslogx$ then $f(x^2).f(y^2)-\large\frac{1}{2}$ $(f(\large\frac{x^2}{y^2})$$+f(x^2y^2))= ?$

(A) -2

(B) -1

(C) 0

(D) 1/2

1 Answer

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