How to determine if a piecewise function is differentiable?
38417
How to find the non-differentiable point(s) of a given continuous function?
30590
Are "most" continuous functions also differentiable?
4679
Nonpiecewise Function Defined at a Point but Not Continuous There
53376
A continuous, nowhere differentiable but invertible function?
16375
Is the function differentiable at $0$?
49587
Does a differentiable everywhere function have a continuous derivative?
27888
Why is $|x|$ not differentiable at $x=0$?
142870
Prove the function is not differentiable at (0,0)
111458
Prove that $f$ is differentiable
122003
From the limit definition of differentiability, determine where the function $f(x) = \sqrt{x}$ is differentiable?
25971
Fitting piecewise functions
39057
Check the differentiablity of $\theta :\mathbb R^2 \setminus\{(0,0)\}\to \mathbb R$
28427
What is the clearest way to graph a piecewise function?
68973
Is the determinant differentiable?
154881
Question on differentiability of a continuous function
155291
Prove that for any piecewise smooth curve it is possible to find the parametrisation
106013
Given $f(x) = x + |x|$ for what values of $x$ is $f$ differentiable