Derivative of arctanx | Calculus 1 Exercises

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We differentiate arctanx using the chain rule and implicit differentiation. We will also use a trig identity to write the derivative of arctanx in terms of x. We find the derivative of arctan(x) is 1/(1+x^2). #apcalculus #calculus1

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Coincidentally, i hadn't found mistake of my proof and i have founded. Thanks.

homqua
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Woah, this is cool🔥, I never knew there was a proof for this, I was thinking it's just a constant you have to memorize, does tanh also have a proof like this....?

Abdul-Rahman