Is a product of derivatives still a derivative?
973
Is the property "being a derivative" preserved under multiplication and composition?
153794
What is the meaning of $1/(D+a)$, where $D$ is the derivative operator?
146888
Derivative of function with 2 variables
20280
Proving that expression is equivalent to the definition of derivative
95598
Derivative of unit step function?
4735
Proof for alternative definition of the derivative
1246
Differences between derivatives and strong derivatives
128719
Are constants the only continuous functions with "symmetric derivative" zero?
93967
Prove partial derivatives exist, but not all directional derivatives exists.
144323
Differentiation of a function
48756
Why are derivatives in interaction terms treated differently from derivatives in the kinetic term?
19828
Show that $\frac{x^3}{x^2+y^2}$ is not differentiable at $(0,0)$, even though all directional derivatives exist
158610
Why is the differentiation of $e^x$ is $e^x$?
88854
Simple way to understand what derivative is
145136
When can we interchange the derivative with an expectation?
16291
Discontinuous derivative.
23319
How to disprove this fallacy that derivatives of $x^2$ and $x+x+x+\dots\quad(x\text{ times})$ are not same.