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Mathematics
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ILoveChess
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21
Knowing that for any set of real numbers $x,y,z$, such that $x+y+z = 1$ the inequality $x^2+y^2+z^2 \ge \frac{1}{3}$ holds.
Apr 23, 2017
question
6
Finding the limit $\lim_{n\to \infty} \left({\frac{n+1}{n-2}}\right)^\sqrt n$
Jan 29, 2016
question
5
Prove that three medians divide a triangle into 6 triangles with equal surface area.
Feb 6, 2017
question
4
Rational numbers inequality proof - is this proof valid?
May 7, 2017
question
4
Finding $\lim_{x\to -2}{\frac{x+2}{\sqrt{-x-1}-1}}\;$ without L'Hospital
Feb 5, 2016
question
3
Absolute value equation with rational expression
Dec 15, 2015
question
3
Evaluating $\lim_{n\to\infty}{n\left(\ln(n+2)-\ln n\right)}$
Jan 31, 2016
question
3
Evaluating $\lim_{x \to 0}{\frac{\sin(4x)}{\sin(3x)}}$ without L'Hospital
Feb 29, 2016
question
3
$x + y = 7 $and $x^3 - y^3 = 37$, find $xy$
Oct 26, 2016
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2
Is it possible to solve $x\sin(x) = 7$ algebraically?
May 9, 2017
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What's the difference between "zwingen" and "erzwingen"?