# j_z

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bio website location age member for 3 years, 10 months seen Nov 21 at 6:18 profile views 185

Just a high-school student.

# 22 Questions

 14 Inequality: $(x + y + z)^3 \geq 27 xyz$ 11 Equation of the complex locus: $|z-1|=2|z +1|$ 8 Reduction formula for $I_{n}=\int {\cos{nx} \over \cos{x}}\rm{d}x$ 8 If $0$, $z_1$, $z_2$ and $z_3$ are concyclic, then $\frac{1}{z_1}$,$\frac{1}{z_2}$,$\frac{1}{z_3}$ are collinear 7 Solve $\sin x = 1 - x$

# 635 Reputation

 +5 Combinatorics problem: Matching messages with envelopes +5 Inequality: $(x + y + z)^3 \geq 27 xyz$ +5 Solve $\sin x = 1 - x$ +5 Laser paradox - A dot restricted to moving across an infinite plane

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# 28 Tags

 0 calculus × 7 0 limits × 3 0 algebra-precalculus × 7 0 probability × 2 0 trigonometry × 6 0 combinatorics × 2 0 integration × 5 0 complex-numbers × 2 0 statistics × 3 0 complex-geometry × 2

# 10 Accounts

 Mathematics 635 rep 516 Physics 162 rep 27 English Language & Usage 125 rep 4 Philosophy 114 rep 2 Writers 106 rep 2