1,979 reputation
1229
bio website benalpert.com
location Mountain View, CA
age
visits member for 4 years
seen 2 days ago

I'm a software developer originally from Boulder, CO, currently working at Khan Academy in Mountain View, CA. In my spare time, I contribute to React, make music, and cook.


May
13
revised Showing $\sum _{k=1} 1/k^2 = \pi^2/6$
better title
May
13
revised Probability of Heads in a coin
reword a little bit
Jun
28
revised What is this R-like symbol power 2?
Photoshopped the image to make it easier to read
Jun
26
revised Choose K items from N in a circle
fix align* formatting
May
4
revised How to accurately calculate the error function erf(x) with a computer?
fix broken link!
Apr
27
revised How to solve this recurrence relation? (convolution integral)
edited tags
Apr
27
revised When is a recurrence relation linear
edited tags
Apr
27
revised There is a table of the complexity of recursive algoritms?
edited tags
Apr
13
revised Draw customized (calculus) graphs like these?
edited tags
Mar
27
revised On deriving the arclength of a hyperbola
Just formatting.
Mar
20
revised expected area of a triangle determined by randomly placed points
fix formatting again
Mar
20
revised expected area of a triangle determined by randomly placed points
fixed formatting
Mar
20
revised Non-Standard Deviation
absolute value instead of diff()
Mar
20
revised Salt concentration as a function of time
edited tags
Mar
20
revised Quicksort with Trivalued Logic
angle brackets were being screwy and confused
Feb
13
revised Finding $\int_0^{\pi/2} \sin x\,dx$
deleted 39 characters in body
Jul
30
revised Which average to use? (RMS vs. AM vs. GM vs. HM)
edited body
Jul
30
revised Proof that $n^3+2n$ is divisible by 3
edited body
Jul
30
revised Proof that $n^3+2n$ is divisible by 3
added 357 characters in body
Jul
25
revised Probability that a stick randomly broken in two places can form a triangle
deleted 54 characters in body; added 8 characters in body