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Top Questions
12
votes
Inequality: $(x + y + z)^3 \geq 27 xyz$
algebra-precalculus
inequality
asked Jun 30 '11 at 7:17
math.stackexchange.com
11
votes
Equation of the complex locus: $|z-1|=2|z +1|$
geometry
complex-numbers
complex-geometry
inversive-geometry
asked Mar 15 '11 at 15:17
math.stackexchange.com
8
votes
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
geometry
complex-numbers
circle
complex-geometry
inversive-geometry
asked Mar 14 '11 at 10:09
math.stackexchange.com
8
votes
Reduction formula for $I_{n}=\int {\cos{nx} \over \cos{x}}\rm{d}x$
calculus
trigonometry
integration
recurrence-relations
asked Jun 20 '11 at 10:50
math.stackexchange.com
6
votes
Solve $\sin x = 1 - x$
trigonometry
asked Mar 11 '11 at 9:15
math.stackexchange.com
6
votes
Solve $\sin(5A) + \cos(5A)\sin(A) - \cos(3A) = 0$
algebra-precalculus
trigonometry
asked Mar 13 '11 at 9:20
math.stackexchange.com
6
votes
Three-variable system of simultaneous equations
algebra-precalculus
polynomials
symmetric-polynomials
asked Mar 16 '11 at 13:46
math.stackexchange.com
6
votes
Definite integral: $\displaystyle\int^{4}_0 (16-x^2)^{\frac{3}{2}} dx$
calculus
trigonometry
circle
integration
asked Jun 26 '11 at 11:07
math.stackexchange.com
5
votes
Geometric mean never exceeds arithmetic mean
sequences-and-series
algebra-precalculus
statistics
inequality
induction
asked Mar 16 '11 at 3:47
math.stackexchange.com
Top Answers
No answers with score of 5 or more
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