Michael Penn
291K subscribers
32:21
Defense against the "dark art" of mathematics.
Michael Penn
17K views • 1 day ago
23:14
From the IMO shortlist.
Michael Penn
10K views • 3 days ago
12:53
Your new favorite pi approximation.
Michael Penn
18K views • 5 days ago
18:47
a nice floor problem from the IMO long list.
Michael Penn
12K views • 7 days ago
23:45
the quantum integral
Michael Penn
10K views • 9 days ago
13:30
I love the technique for evaluating this limit.
Michael Penn
15K views • 11 days ago
15:21
everyone loves a nice recursive sequence!
Michael Penn
12K views • 13 days ago
16:10
an interesting sequence of integrals
Michael Penn
7.3K views • 2 weeks ago
17:36
the subtleties of sequences of functions
Michael Penn
11K views • 2 weeks ago
45:08
why there is no four dimensional cross product.
Michael Penn
46K views • 2 weeks ago
11:56
an exceedingly interesting differential equation
Michael Penn
16K views • 3 weeks ago
11:25
a nice functional equation
Michael Penn
10K views • 3 weeks ago
11:41
the geometric mean of a function
Michael Penn
11K views • 3 weeks ago
10:21
a geometry problem inspired by Japanese Sangaku
Michael Penn
18K views • 3 weeks ago
22:41
the cryptography attack that could bring down the internet.
Michael Penn
12K views • 3 weeks ago
20:34
which method do you prefer??
Michael Penn
10K views • 1 month ago
14:57
the hyperbolic Fibonacci numbers
Michael Penn
10K views • 1 month ago
13:40
The derivative of sin(x degrees) -- or why we use radians
Michael Penn
39K views • 1 month ago
16:02
A Putnam second derivative problem.
Michael Penn
13K views • 1 month ago
19:03
have you seen this approach to means??
Michael Penn
16K views • 1 month ago
19:00
is this my new favorite number??
Michael Penn
11K views • 1 month ago
16:46
you've been lied to about parabolas
Michael Penn
18K views • 1 month ago
14:18
a nice integer polynomial equation
Michael Penn
13K views • 1 month ago
15:11
reciprocals of twin primes
Michael Penn
17K views • 1 month ago
23:03
the parabolic trig functions
Michael Penn
41K views • 1 month ago
23:13
integer points on Mordell curves
Michael Penn
17K views • 1 month ago
13:41
a famous geometry problem
Michael Penn
19K views • 1 month ago
20:04
a surprisingly complicated sum from a viewer
Michael Penn
13K views • 1 month ago
8:59
Canada's favorite polynomials
Michael Penn
9.4K views • 1 month ago
21:26
a very interesting differential equation
Michael Penn
107K views • 1 month ago
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