Show that $f $ is differentiable in a endpoint
1371
Prove that $f'(a)=\lim_{x\rightarrow a}f'(x)$.
73073
Differentiating $y=x^{2}$
39057
Check the differentiablity of $\theta :\mathbb R^2 \setminus\{(0,0)\}\to \mathbb R$
145368
How to show $f:Y\to X^{+}$ is continuous?
142490
Alternative proof for differentiability of inverse function?
137527
if $f(x)$ is differentiable at a x, prove that: $\lim_{h\to0}\frac{f(x+h)-f(x-h)}{2h}$
21178
Show that $f$ extends to a smooth map.
62352
Proving a scalar function is differentiable at the origin but that its partial derivatives are not continuous at that point.
144323
Differentiation of a function
142870
Prove the function is not differentiable at (0,0)
43956
Differentiating $f(x)^{g(x)}$
80650
Complex differentiability of $f(z)=|z|$
103241
A function that is continuous at the origin but not differentiable there
34136
$f$ is differentiable in $[0,1]$ ,$\sup_{x\in[0,1]}|f'(x)| \le M\lt+\infty $
127114
Differentiability implying continuity
53809
Continuous map of differentiable manifolds is differentiable if differentiable functions pull back to differentiable functions
116851
Show that f(x) is convex