Michael Penn
293K subscribers
18:09
a bit about one of Ramanujan's favorite functions
Michael Penn
10K views • 1 day ago
10:29
what's the limit of this integral?
Michael Penn
8.9K views • 3 days ago
9:29
a very tricky simple problem
Michael Penn
13K views • 5 days ago
16:56
the most creative definition of sine and cosine
Michael Penn
19K views • 7 days ago
16:02
Mobius' favorite function
Michael Penn
11K views • 9 days ago
22:39
Have you ever seen this definition of Euler's constant??
Michael Penn
17K views • 11 days ago
15:26
The most creative digit sum problem I have ever seen!!
Michael Penn
11K views • 13 days ago
16:57
Dini's magical integral
Michael Penn
14K views • 2 weeks ago
16:22
the unluckiest divisibility rules
Michael Penn
11K views • 2 weeks ago
26:00
the most viral "false" equation
Michael Penn
18K views • 2 weeks ago
17:41
the Fibonacci sequence is a trig function??
Michael Penn
24K views • 3 weeks ago
11:23
my new favorite proof of this classic result
Michael Penn
40K views • 3 weeks ago
13:36
a classic integral without the standard tool -- antiderivative of ln x without integration by parts
Michael Penn
29K views • 3 weeks ago
18:49
The series test your Calculus professor hid from you.
Michael Penn
18K views • 3 weeks ago
32:21
Defense against the "dark art" of mathematics.
Michael Penn
51K views • 4 weeks ago
23:14
From the IMO shortlist.
Michael Penn
12K views • 1 month ago
12:53
Your new favorite pi approximation.
Michael Penn
27K views • 1 month ago
18:47
a nice floor problem from the IMO long list.
Michael Penn
13K views • 1 month ago
23:45
the quantum integral
Michael Penn
11K views • 1 month ago
13:30
I love the technique for evaluating this limit.
Michael Penn
16K views • 1 month ago
15:21
everyone loves a nice recursive sequence!
Michael Penn
12K views • 1 month ago
16:10
an interesting sequence of integrals
Michael Penn
7.6K views • 1 month ago
17:36
the subtleties of sequences of functions
Michael Penn
11K views • 1 month ago
45:08
why there is no four dimensional cross product.
Michael Penn
48K views • 1 month ago
11:56
an exceedingly interesting differential equation
Michael Penn
16K views • 1 month ago
11:25
a nice functional equation
Michael Penn
10K views • 1 month ago
11:41
the geometric mean of a function
Michael Penn
11K views • 1 month ago
10:21
a geometry problem inspired by Japanese Sangaku
Michael Penn
19K views • 1 month ago
22:41
the cryptography attack that could bring down the internet.
Michael Penn
13K views • 1 month ago
20:34
which method do you prefer??
Michael Penn
10K views • 1 month ago
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