Two apparently different antiderivatives of $\frac{1}{2 x}$
29076
Two different solutions to integral
6707
Why there is a $\frac{1}{2}$ in the distance formula $d=\frac{1}{2}at^2$?
106768
Recognizing that a function has no elementary antiderivative
19828
Show that $\frac{x^3}{x^2+y^2}$ is not differentiable at $(0,0)$, even though all directional derivatives exist
86247
$ \int\frac{g(x)}{f(x)} \, dx $ where $f(x) = \frac{1}{2}(e^x+e^{-x})$ and $g(x) = \frac{1}{2}(e^x - e^{-x})$?
85085
Simplifying the derivative of $|x|$
157608
One-sided limits of $f'(x)$ at a point vs. one-sided limits of the difference quotient at that point
112709
$\frac{1}{x-a} + \frac{1}{x-b} + \frac{1}{x-c} = 0 $ has precisely two real roots
135941
Derivative of $|x|^\alpha$
27969
Why does $\frac{1}{x} < 4$ have two answers?
152895
What is wrong with this derivation of $\frac{d}{dx}x^2$?
156597
Proving a reduction formula for the antiderivative of $\cos^n(x)$
146358
Why is there a $\frac 1 2$ in $\frac 1 2 mv^2$?
12726
Differentiating both sides of a non-differential equation
6482
Why aren't the functions $f(x) = \frac{x-1}{x-1}$ and $f(x) = 1$ the same?
108284
Integration and existence of an antiderivative
83531
Prove $\iint_{x^{2}+y^{2} \leq 1} e^{x^{2}+y^{2}} d x d y \leq\left[\int_{-\frac{\sqrt{\pi}}{2}}^{\frac{\sqrt{\pi}}{2}} e^{x^{2}} d x\right]^{2} $