Differentiablilty of function with inequality
140213
Is a Lipschitz function differentiable?
60556
Uniform convergence, Bounded derivative.
71260
Check differentiability of multivariable functions
145173
$f: \mathbb{R}^2-\{0\} \rightarrow \mathbb{R}$ is continuously differentiable and $f(\alpha x) = \alpha^2f(x)$, then $x \cdot \nabla f(x) = 2 f(x)$
105084
Let f be a function twice differentiable and with derivatives continuous on an interval $[a,b]$ containing $0$. Prove the following statement:
127114
Differentiability implying continuity
33130
$f$ differentiable except in $1$ point
39057
Check the differentiablity of $\theta :\mathbb R^2 \setminus\{(0,0)\}\to \mathbb R$
9270
Differentiable function, with $f'(x)=[f(x)]^2$
151410
Inequality of continuous functions
147758
Differentiable but not continuously differentiable.
135941
Derivative of $|x|^\alpha$
97146
differentiate with respect to a function
94944
Differentiable functions satisfying $f'(f(x))=f(f'(x))$
150833
Discontinuities of the derivative of a differentiable function on closed interval
67791
Can I exchange limit and differentiation for a sequence of smooth functions?
43874
Differentiability implies continuity - A question about the proof