# Derivative of Inverse Trigonometric functions

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Use inverse functions and implicit differentiation to prove that:

d (tan^-1x) = 1___

dx 1+ x^2

https://brainmass.com/math/derivatives/derivative-inverse-trigonometric-functions-45274

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The derivative of inverse tan x is proven. The solution is detailed and well presented. The response received a rating of "5" from the student who originally posted the question.

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