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If y = sin-1(2tanx1+tan2x), find dydx. -

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Question

If y = `sin^-1((2tanx)/(1 + tan^2x))`, find `dy/dx`.

Sum

Solution

y = `sin^-1((2tanx)/(1 + tan^2x))`

= sin–1 sin 2x

= 2x

∴ `dy/dx` = 2

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Derivatives of Inverse Functions
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