3 levels of "perpendicular"
9:15
The BIGGEST rectangle under y=x^3 (but NO calculus!)
11:14
I used a double integral to solve a single improper integral
9:50
the COOLEST limit on YouTube!
25:22
What Lies Above Pascal's Triangle?
10:42
A cute limit with 0^0 form and the answer is 0
13:21
Calculus teacher vs L'Hopital's rule students
16:47
Prove that n^3 +11n is divisible by 6
12:17