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13h ago
Getting rid of a floor function in the next expression:$\left\lfloor\frac{(x-2)^2}{4}\right\rfloor $, It is known x is odd.
— Brian M. Scott
154k17138274
13h ago
Which methods to use to integrate $\int{\frac{x^4 + 1}{x^2 +1}}\, dx$
— lab bhattacharjee
28.5k12348
16h ago
Difference between 'A open subset of B' and 'A open relative to B'
— Pete L. Clark
44.5k374162
19h ago
Computing $ \int_{0}^{\infty} \frac{1}{(x+1)(x+2)…(x+n)} \mathrm dx $
— Raskolnikov
6,86521638
1d ago
Let $f :\mathbb{R}→ \mathbb{R}$ be a function such that $f^2$ and $f^3$ are differentiable. Is $f$ differentiable?
— julien
22.6k31357
1d ago
If you have a $1$ in $36$ chance of winning an event. What is the probability that you will win at least once in $36$ tries?
— marty cohen
6,4061516
1d ago
If $f(x)\to f(a)$ when $x\to a$, why don't we denote it as $\displaystyle \lim_{x\to a}f(x)\to f(a)$?
— Clive Newstead
15.3k32265
1d ago
Function such that $f(x) = -1$ for $x < 0,$ and $f(x)=1$ for $x > 0$?
— Trevor Wilson
5,510428
1d ago
If $\lim_{x \to \infty}f(x)=\lim_{x \to -\infty}f(x)=0$ does it imply that $\lim_{x \to \infty}f'(x)$ = $\lim_{x \to -\infty}f'(x)=0$?
— Did
102k1074180
1d ago
If $S \times \Bbb{R}$ is homeomorphic to $T \times \Bbb{R}$ and $S$ is compact, can we conclude that $T$ is compact?
— Alexander Thumm
3,246623
1d ago
example of a function $f :\mathbb{R} \to \mathbb{R}$ whose set of points of discontinuity is $\mathbb{Q}$
— Asaf Karagila
90.7k12136283
1d ago
what is the sum of this?$\frac12+ \frac13+\frac14+\frac15+\frac16 +\dots\frac{1}{2012}+\frac{1}{2013} $
— Ewan Delanoy
8,3931631
1d ago
Proving that $\frac{1}{\sqrt{1}}+\frac{1}{\sqrt{2}}+\dots+\frac{1}{\sqrt{100}}<20$
— user17762
76k8106230
2d ago
Does the number pi have any significance besides being the ratio of a circle's diameter to its circumference?
— KenWSmith
39137
2d ago
Simplifying $\sqrt{\underbrace{11\dots1}_{2n\ 1's}-\underbrace{22\dots2}_{n\ 2's}}$
— Danny Cheuk
2,53111235
