Question on Infinitely Differentiable Functions
93712
Let $f:(-1,1) \rightarrow \mathbb{R}$ be smooth on $(-1,1)$, $f(0) = 1$. Find $f(x)$.
115635
Differentiability of antiderivative and continuity of derivative
4636
How to show that $f$ is differentiable at $x=0.$
80650
Complex differentiability of $f(z)=|z|$
53376
A continuous, nowhere differentiable but invertible function?
129324
Let $f:[0;1]\to\mathbb R$ be continiously differentiable
7755
Question on entire function
124346
Where is $f(z)=\Re (z)$ differentiable?
2506
twice differentiable functions
103241
A function that is continuous at the origin but not differentiable there
71738
Continuously differentiable function iff $|f(x + h) - f(x + t) - l(h - t)| \leq \epsilon |h-t|$
153510
Questions about the existence of a function
46923
Differentiable Sequences
21954
A question about $f(x)\equiv 0$
127114
Differentiability implying continuity
150005
Existence of points in a differentiable function
120784
Differentiablility over closed intervals