If x = 3/5 then the value of cot(2tan^-1x + cot^-1x) is
If x = 3/5 then the value of cot(2tan-1x + cot-1x) is
(A) \(\frac{3}{5}\)
(B) \(-\frac{3}{5}\)
(C) \(-\frac{4}{5}\)
(D) \(\frac{4}{5}\)
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