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[" If "],[f(x)=2x+cot^(-1)x+log(sqrt(1+x...

[" If "],[f(x)=2x+cot^(-1)x+log(sqrt(1+x^(2))-],[f(x)],[" (A) increases in "[0,pi)],[" (B) decreases in "[0,pi)],[" (c) neither increases nor decreases in "],[" (0,"pi" ) "],[" (D) None of these "]

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