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user26486

Apparently, this user prefers to keep an air of mystery about them.

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23 Prove that if $x_1,x_2,\ldots,x_n>0$, then $(1+x_1)(1+x_1+x_2)\ldots(1+x_1+x_2+\ldots+x_n) \ge \sqrt{(n+1)^{n+1}}\sqrt{x_1x_2\ldots x_n}$. Dec 22 '13
18 Prove the inequality using AM-GM inequality Jun 22 '15
17 prove that the equation has just one root. May 18 '15
15 Why can ALL quadratic equations be solved by the quadratic formula? Feb 3 '15
14 Using the Limit definition to find the derivative of $e^x$ Apr 5 '15
12 diophantine equation $x^3+x^2-16=2^y$ Apr 18 '15
12 Compare two powers of numbers without common divisor Jun 1 '15
12 Is it a composite number? Jun 17 '15
11 How to deduce a closed formula given an equivalent recursive one? Aug 25 '14
11 Find all $x,y,z\in\mathbb N$, $x,y,z>1$ such that satisfy $x\mid yz+1$, $y\mid xz+1$, and $z\mid xy+1$ Jan 17 '14
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