Example of continuous non differentiable function

Question

I am looking for an Example of continuous non differentiable function in $R^2$

Possible duplicate of Are Continuous Functions Always Differentiable? — Chris Brooks, Mar 21 '18 at 21:25
@DRPR Please remember that you can choose an answer among the given if the OP is solved, more details here https://meta.stackexchange.com/questions/5234/how-does-accepting-an-answer-work — user, Mar 24 '18 at 21:18

score 2 · Accepted Answer · answered Mar 21 '18 at 21:26

2

A classical patological example is the Weierstrass function.

answered Mar 21 '18 at 21:26

user

1 Answers1