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user49640
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  • Member for 7 years, 10 months
  • Last seen more than 7 years ago
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15
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8
Posts %
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Posts
8
Posts %
5
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8
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3
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8
Posts %
3
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Top posts
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5
"Aren't" instead "am not" for first person singular
May 29, 2017
answer
3
How to get better at English
Feb 19, 2017
answer
2
What does it mean "Fiscal inactivity" in the following context?
Feb 19, 2017
answer
2
Trouble with distinguishing between singulars and plurals
Mar 14, 2017
answer
1
If this heat wave "persist" or "persists",we will have an early summer break
Feb 15, 2017
answer
1
"I have a bad day." or "I had a bad day." At night which one is more natural?
Feb 17, 2017
answer
1
its or his in this context?
Feb 19, 2017
answer
1
Tense agreement: "confirmed it is" v.s. "confirmed it was"
Mar 30, 2017
answer
1
Combination of past simple and present simple in telling stories
May 28, 2017
answer
1
"Change is part of a business' growth"
May 29, 2017
Top network posts
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15
Finding solutions to $2^x+17=y^2$
14
Good books on complex numbers
10
$f(x)=ax+b$ for some $a,b\in\mathbb{Q}$ if $f(\mathbb{Q})\subset\mathbb{Q}$ and $f(\mathbb{R-Q})\subseteq \mathbb{R}-\mathbb{Q}$
7
Given that $a\cos\theta+b\sin\theta+A\cos 2\theta+B\sin 2\theta \leq 1$ for all $\theta$, prove that $a^2+b^2\leq 2$ and $A^2+B^2 \leq 1$
6
showing $\mathbb{Q}$ is isomorphic to $\mathbb{R}$ or not as a group under addition