Moving Stick Problem (the simplest case of the Moving Sofa Problem)
8:24
Moving Stick Problem (the simplest case of the Moving Sofa Problem)
10.6K views6 days ago
YouTubeblackpenredpen
My all-in-one calculus problem
11:54
My all-in-one calculus problem
163.4K viewsNov 14, 2023
YouTubeblackpenredpen
This "quadratic" equation has 6 solutions!
8:50
This "quadratic" equation has 6 solutions!
155.1K viewsMar 3, 2024
YouTubeblackpenredpen
Which is the worst math debate: 0^0, sqrt(1), 0.999...=1, or 12/3(4)?
7:35
Which is the worst math debate: 0^0, sqrt(1), 0.999...=1, or 12/3(4)?
599.9K viewsMar 11, 2024
YouTubeblackpenredpen
Second order homogeneous linear differential equations with constant coefficients
11:44
Second order homogeneous linear differential equations with constant coefficients
330K viewsMar 9, 2017
YouTubeblackpenredpen
Finding the "volume" of a 4d sphere
15:27
Finding the "volume" of a 4d sphere
44.1K views4 months ago
YouTubeblackpenredpen
A fancier way to solve this radical equation
7:25
A fancier way to solve this radical equation
19K views1 year ago
YouTubeblackpenredpen
5:28
Can we have a right triangle with sides 1, x and x^2 (but the hypotenuse is x)
77.6K views3 months ago
YouTubeblackpenredpen
9:44
Is this equation solvable? x^ln(4)+x^ln(10)=x^ln(25)
130K viewsFeb 29, 2024
YouTubeblackpenredpen
19:01
How math majors use the intermediate value theorem!
35.6K views5 months ago
YouTubeblackpenredpen
6:17
Integration by Accident
15.5K views3 months ago
YouTubeblackpenredpen
22:51
Brilliant Trig Identity Challenge!
16.5K views8 months ago
YouTubeblackpenredpen
6:36
So you want another logarithm triangle (w/ law of cosines this time!)
12.3K views4 months ago
YouTubeblackpenredpen
8:50
Believe in Cauchy–Schwarz Inequality, NOT calculus 3
47.7K views11 months ago
YouTubeblackpenredpen
13:59
This calculus proof is only for math majors (National Taiwan University entrance exam)
14.3K views4 months ago
YouTubeblackpenredpen
9:16
If 1+z+z^2+z^3+z^4+z^5+z^6=0, then z+z^2+z^4=?
47.3K views11 months ago
YouTubeblackpenredpen
9:55
Is x^x=0 solvable?
602.7K viewsAug 27, 2024
YouTubeblackpenredpen
See more
Static thumbnail place holder