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S L
  • Member for 13 years, 9 months
  • Last seen more than a week ago
  • Kathmandu, Nepal
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60
How to prove that $\lim\limits_{x\to0}\frac{\sin x}x=1$?
May 16, 2013
55
Calculus proof for the area of a circle
Aug 28, 2012
34
Evaluate:: $ 2 \sum_{n=1}^\infty \frac{(-1)^{n+1}}{n+1}\left( 1 + \frac12 +\cdots + \frac 1n\right) $
Feb 2, 2013
29
Evaluate $\int_0^\infty\frac{\ln x}{1+x^2}dx$
May 25, 2014
18
How to compute $\sqrt{i + 1}$
Aug 28, 2012
15
Curl of a vector in spherical coordinates
Jun 21, 2012
12
Check if line intersects with circles perimeter
Jan 11, 2013
11
How to solve an exponential equation with two different bases: $3^x - 2^x = 5$
Apr 2, 2012
10
How to visualize Reverse Triangle Inequality $||\mathbf{a}| − |\mathbf{b}|| ≤ |\mathbf{a} − \mathbf{b}|$?
Apr 29, 2014
10
how to find this limit $\lim_{x\rightarrow 0} \frac{\sin x^2}{ \ln ( \cos x^2 \cos x + \sin x^2 \sin x)} = -2$ without using L'Hôpital's rule
Jun 4, 2012
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Detect Enter key is pressed with jQuery
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What is the size of column of int(11) in mysql in bytes?
78
PHP Fatal error: Call to undefined function curl_init()
75
How do I limit internet bandwidth?
42
Search engine Lucene vs Database search