Differentiate the following functions with respect to x:

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Let 2x = tanθ
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Considering the limits,
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–1 < 2x < 1
–1 < tanθ < 1
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Now,
y = tan–1(tan2θ)
y = 2θ
y = 2tan–1(2x)
Differentiating w.r.t x, we get
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