The function is from $\mathbb{R}^2$ to $\mathbb{R}^2$.
I have thought about possibly picking a subsequence which converges to 0 from a single direction, then taking the directional derivative, but I don't think this subsequence exists.
The function is from $\mathbb{R}^2$ to $\mathbb{R}^2$.
I have thought about possibly picking a subsequence which converges to 0 from a single direction, then taking the directional derivative, but I don't think this subsequence exists.
Copyright © 2021 JogjaFile Inc.