Real Analysis 39 | Derivatives of Inverse Functions [dark version]

[@andrewxiwu]

Neat lecture! It also seems a nice opportunity to apply chain rule to derive the same result, as "proof 2"

[@brightsideofmaths]

Thanks! But for using the chain rule, you already have to assume that the inverse is differentiable at the point.

[@andrewxiwu]

Great point! This argument is only good to determine the value if we already know differentiability of the inverse. That computation is too attractive:)