Mathematics
Mark Eichenlaub's user avatar
Mark Eichenlaub's user avatar
Mark Eichenlaub's user avatar
Mark Eichenlaub
  • Member for 12 years, 10 months
  • Last seen more than a month ago
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About

I write physics courses at focused on problem solving at Art of Problem Solving. They range from introductory algebra-based courses to physics olympiad preparation.

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All Questions Answers
Score Newest
answer
438
Fourier transform for dummies
Oct 14, 2011
answer
314
Find five positive integers whose reciprocals sum to $1$
Jan 31, 2013
question
74
What am I doing when I separate the variables of a differential equation?
Mar 16, 2011
answer
46
Why does a circle enclose the largest area?
Mar 10, 2011
question
40
Why is Euclidean geometry scale-invariant?
Feb 21, 2011
question
35
Why isn't the gamma function defined so that $\Gamma(n) = n! $?
Jan 20, 2011
answer
28
What is an intuitive explanation for $\operatorname{div} \operatorname{curl} F = 0$?
Mar 14, 2011
question
18
What are the polar coordinates of the origin?
Apr 13, 2011
question
14
Why can't we interchange differentiation with taking a limit of a series of functions?
Sep 15, 2011
answer
12
An ant walk on the edges of a cube where it can select any of the 3 adjoining vertices with equal probability.
Mar 20, 2011
Top network posts
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285
Why are mirror images flipped horizontally but not vertically?
128
Why doesn't the Moon fall onto the Earth?
126
Why am I not burned by a strong wind?
125
Is Earth really a magnet?
93
What software programs are used to draw physics diagrams, and what are their relative merits?

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