Mathematics
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Lee David Chung Lin
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194 Answers

Votes Activity Newest
11
How to find area under sines without calculus?
Mar 15 '18 at 2:12
6
Expected maximum pairwise distance for $n$ points on a circle?
Dec 18 '18 at 18:22
5
Is it possible to have a closed formula for a sequence 2, 4, 6, 8, … and the sequence would be equidistributed?
May 11 '18 at 1:18
5
Probability that the two segments intersect
Apr 30 '18 at 0:23
5
Show that $\int_0^{\pi/2}\frac{\sin x\cdot \cos x}{x+1}dx=\frac12(\frac12+\frac1{\pi +2}-A)$
Apr 27 '18 at 20:02
4
“Ruff” Geometric Problem: Dog tethered to hexagonal doghouse
Feb 7 '20 at 1:37
4
Covariance between an exponential random variable and the maximum of several exponential random variables
Jun 2 '18 at 9:21
4
Mean distance between 2 points in adjacent voxels (cubes)
May 26 '18 at 3:42
4
Find the volume of a solid rotated around the x-axis
Mar 26 '19 at 0:12
4
Find the locus of midpoints dropped from hyperbola to asymptotes
Feb 6 '19 at 13:41
4
Derivation of the pdf of RV $X (\left|X \right| + 1)$
Oct 1 '18 at 5:45
4
Binomial Approximation of Gaussian Distribution
Apr 11 '18 at 4:28
4
Who discovered this number-guessing paradox?
Dec 1 '17 at 12:58
4
Prove $\binom km\binom tk=\binom tm\binom{t-m}{t-k}$
Oct 7 '16 at 5:38
3
Find the radius of three equal circles, with radius $r$, inscribed in a rectangle.
Feb 8 '20 at 16:15
3
expected area of a triangle determined by randomly placed points
Oct 10 '17 at 12:43
3
Geometrically showing $\frac{\alpha}{\beta} > \frac{\sin\alpha}{\sin\beta}$, for $0 < \beta < \alpha < 90^\circ$
Nov 1 '18 at 17:26
3
Moment Generating function of one variable and Probability
Jan 28 '19 at 10:57
3
Where did I go wrong in proving $\mathbb E[X^{2n}] = \prod_{1 \leq k \leq 2n, k \operatorname{odd}}k$
Jan 24 '19 at 1:20
3
Does equal probability of rank imply two random variables symmetric around median?
Jan 3 '19 at 18:29
3
Probability Integrals for a Convolution
Oct 30 '18 at 13:12
3
Conditional Expectation of Uniform-Product
Oct 26 '18 at 20:38
3
distribution of fractions of partial sums of exponential random variables
Oct 19 '18 at 16:33
3
Conditional probability of a Royal flush
Oct 19 '18 at 5:51
3
What makes something a joint distribution, for example is $P(X+Y \le a)$ considered a joint distribution?
Oct 18 '18 at 15:27
3
Showing $X$, $Y$ are not independent but $\operatorname{Cov}[X, Y] = 0$
Oct 16 '18 at 22:43
3
How to conclude $P[X < 2/3] < 3\epsilon$ from $0 \leq X \leq 1$ and $E[X] \geq 1-\epsilon$
Oct 15 '18 at 17:55
3
Congruence of angles with vertex at Fermat-Torricelli point through any two vertices
Oct 1 '18 at 22:31
3
Scale Parameter of Rayleigh Distribution
Jun 5 '18 at 11:38
3
computing probabilities of an negative binomial random variable
May 4 '18 at 20:49
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