How would I find the nth derivative of a function, where n is imaginary? What about where n is not a constant?
60897
Non-integer order derivative
28297
derivative of x^x^x... to infinity?
158520
Derivative of Fourier transform: $F[f]'=F[-ixf(x)]$
113888
Behavior of derivative near the zero of a function.
69876
For every $n \in \mathbb{N}$, find a function $f$ which is differentiable $n$ times at $0$, but not $n+1$ times.
95598
Derivative of unit step function?
75705
Finding derivative of $\sqrt[3]{x}$ using only limits
62365
How to use induction to prove the product rule for higher derivatives?
13150
If the derivative of $f$ is never zero, then $f$ is one-to-one
101037
The given limit is a derivative, but of what function and at what point?
131530
Derivative of a pure function with SlotSequence
139216
Use the definition of derivative to find $f'(x)$ for $f(x) = x^{1/2}$.
146888
Derivative of function with 2 variables
134871
Using definition of derivative to differentiate $f(x)= \sqrt{x}+1$
84436
third derivative of inverse function
157918
Finding the derivative of $x^x$
59911
Looking for help with a proof that n-th derivative of $e^\frac{-1}{x^2} = 0$ for $x=0$.