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hollow7
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65
What is the integral of 1/x?
Oct 2, 2012
50
Limit of $x \log x$ as $x$ tends to $0^+$
Aug 19, 2013
21
Is the Maclaurin series expansion of $\sin x$ related to the inclusion-exclusion principle?
Mar 26, 2012
18
Formula for calculating $\sum_{n=0}^{m}nr^n$
Mar 13, 2012
12
How to know if $\log_78 > \log_89$ without using a calculator?
May 3, 2012
11
What is the probability that $XYZ$ is divisible by $5$?
Sep 4, 2012
10
How to see $\sin x + \cos x$
Aug 12, 2012
7
Finding the number of monotonic paths not crossing the diagonal
Mar 25, 2012
7
Finding the number of intersections of chords within a circle
Nov 6, 2012
6
Prove this property for an arbitrary circle
Nov 6, 2012
Top network posts
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61
How to enable/disable ARC in an xcode project?
22
Does a never-halting machine always loop?
14
Do non-computable functions grow asymptotically larger?
10
Does ARC release malloc'ed memory for you?
9
How to hook the OS X dictionary