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Mathematics
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lsp
  • Member for 12 years, 9 months
  • Last seen more than 1 year ago
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43
$xy=1 \implies $minimum $x+y=$?
Mar 1, 2013
13
Find the last two digits of $ 7^{81} ?$
Apr 15, 2013
11
What does the raised $^2$ stand for?
Dec 23, 2013
7
How to know difference between sum of numbers?
Feb 4, 2014
7
Prove: If $a^2+b^2=1$ and $c^2+d^2=1$, then $ac+bd\le1$
Jan 3, 2015
6
Complex numbers $z$ such that $|z|= 1$
Apr 8, 2013
6
What does it mean to have a determinant equal to zero?
Apr 9, 2013
6
How do I prove this seemingly simple trigonometric identity
Dec 2, 2014
6
Solving $\sqrt{x}-2\sqrt[4]{x}-8 = 0$
Mar 28, 2013
6
$2017$ as the sum of two squares
Jan 30, 2014