Finding the derivative of $\sin(x)/x$
112898
Derivative of sin(x)/x at $0$ by definition of derivative
7492
Is there a formula for $\sin(xy)$
84597
Derivative of $(1-x)^{-2}$
88854
Simple way to understand what derivative is
7296
Prove $(1-\cos x)/\sin x = \tan x/2$
86860
Continuity of differentiable function $x^2\sin(1/x)$
156231
Computing $\lim\limits_{n\to\infty} \int_{0}^{\infty}\frac{\sin(x/n)}{(1+x/n)^{n}}\, dx$
27862
Symbols of derivatives
84436
third derivative of inverse function
99795
Derivative of piece-wise function given by $x\sin\frac1x$ at $x=0$
61548
What would be the roots of the derivative of this polynomial
91521
Ambiguity of notation: $\sin(x)^2$
116520
formula for the $n$th derivative of $e^{-1/x^2}$
85085
Simplifying the derivative of $|x|$
147113
How to solve $2 \tan x / (1 - (\tan x)^2) = (\sin 2x)^2$?
38192
Derivative of inverse function at a point.
131769
How to derive this second derivative using the quotient rule?