Extrema of $f(x)= x^2e^{\sin(x)}$
122705
Solution of trigonometric equation $0 = x\cos(x)+2$
128795
$n$th derivative of $e^x \sin x$
19658
$\max_{t\in[0,T]}|x(t)|^2 \le |x(0)|^2e^{\int_0^T|y|^2\,\mathrm ds}.$ using gronwall's lemma?
27347
Verify that $\left|\int_{\gamma} \exp(iz^2)dz\right| \leq \frac{\pi\big(1-\exp(-r^2)\big)}{4r}$ where $\gamma(t)=re^{it}$, for $0\leq t \leq \pi/4$.
18880
Distribution of extremal values
46736
Limits involving trigonometric functions $f(x)=\lfloor{x^2 \rfloor} \sin^2(\pi x)$
85535
Finding maximum of $|f'(i)|$
109295
Proving $1-\exp(-4x^2/ \pi) \ge \text{erf}(x)^2$
20192
Prove that: $(f(x))^{2} + (f'(x))^{2} \leqslant \max(a,b)$ where $(a,b) \in \mathbb{R}^2$
37812
Prove that the function$\ f(x)=\sin(x^2)$ is not uniformly continuous on the domain $\mathbb{R}$.
10068
$f(x,y)= e^{-\frac{1}{x^2+y^2}}$ when $(x,y)\neq (0,0)$ and $f(0,0)=0$.
95288
Prove that, $f'(0) \ge -\sqrt{2}$ for a function $f$ satisfying some conditions on $(-1,1)$.
120707
Proof regard to the function $ f\left(x\right)=\begin{cases} x^{2}\sin\left(\frac{1}{x^{2}}\right) & x\neq0\\ 0 & x=0 \end{cases} $
125547
Minimum distance between the curves $f(x) =e^x$ and $g(x) =\ln x$
57785
Finding all maxima and minima of a function
26562
Inverse of $f(x)=\sin(x)+x$
92399
Some questions about the function $xe^{-x}$