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Top Questions
13
votes
Sum of series : $1+11+111+...$
algebra-precalculus
summation
arithmetic-progressions
geometric-progressions
asked Sep 29, 2016 at 18:45
math.stackexchange.com
6
votes
Does equation $a^m+b^n =c^{m+n}$ have integral solutions?
elementary-number-theory
diophantine-equations
asked Jul 27, 2023 at 10:11
math.stackexchange.com
Top Answers
12
Is there an elegant proof to this old problem of parallelism that dates back to the 19th century?
math.stackexchange.com
10
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math.stackexchange.com
9
Geometry problem: square and golden ratio
math.stackexchange.com
8
How do you solve a system of quadratic equations?
math.stackexchange.com
8
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math.stackexchange.com
7
How to evaluate $\int_{\pi/2}^\pi \sqrt{1 - \frac{1}{2}\cos^2 x + \sin x \sin 2x} \;\mathrm{d}x$
math.stackexchange.com
7
Prove $\sum_{n=1}^{\infty} \arctan\left(\frac{1}{F_n}\right) \arctan\left(\frac{1}{F_{n+1}}\right)=\frac{\pi^2}{8}$
math.stackexchange.com
7
Will a circle projected onto a cylinder be an ellipse?
math.stackexchange.com
6
Sum to n terms the series $\cos \theta+ 2\cos 2\theta+ \cdots + n\cos n\theta$
math.stackexchange.com
6
Prove that $BD$ bisects $\angle ABC$
math.stackexchange.com
6
Find a synthetic proof to an old problem .
math.stackexchange.com
5
Divisibility 1,2,3,4,5,6,7,8,9,&10
math.stackexchange.com
5
An algebraic solution for $\log_3(x+1)+\log_2(x)=5$
math.stackexchange.com
5
Determination of circle given diameter and a point
math.stackexchange.com
5
Prove that the circles $\omega_1$, $\omega_2$, $\omega_3$ have equal radii.
math.stackexchange.com
5
How to find the angle created when joining two vertices of four adjacent squares
math.stackexchange.com
math.stackexchange.com