Differentiate the functions given in w.r.t. x.

Given:

Let y=


Let y = u + v




Taking log on both sides, we get



log u = x.cos x.log x


Now, differentiate both sides with respect to x








Taking log on both sides, we get



log v = log (x2 + 1) – log (x2 – 1)


Now, differentiate both sides with respect to x








Because, y = u + v




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