blackpen redpen DE

0:16:59

integration by parts, DI method, VERY EASY

0:01:24

“You know something has gone wrong when he switches to Chinese”

0:06:37

Believe in geometry, not squaring both sides!

0:00:29

How to blackpenredpen!

0:06:46

You probably haven't solved a square root equation like this before

0:09:29

Don't bother me, I am thinking. (Lambert W function)

6:38:13

100 calculus derivatives (ultimate derivative tutorial)

0:07:43

ALL solution to a triple exponential equation 8^x+4^x+2^x=14

0:00:16

i did another 100 integrals!

0:07:35

Which is the worst math debate: 0^0, sqrt(1), 0.999...=1, or 12/3(4)?

0:04:13

Integral battle! 2024 vs 2025

6:06:54

100 series convergence tests (no food, no water, no stop)

5:50:23

100 integrals (world record?)

0:00:07

the answer! @blackpenredpen

0:14:54

Why I don't teach LIATE (integration by parts trick)

5:56:58

the ultimate integral starter (u sub, IBP, trig sub, partial fractions & more)

0:09:07

Oxford MAT asks: sin(72 degrees)

0:04:58

Hate to be that guy but I need the extra credit! Reddit complex numbers r/theydidthemath

0:11:54

My all-in-one calculus problem

0:16:30

No one showed up to his 9th grade math talk, so we made a video! (Pell's equation ft. @octopuskeng)

0:10:20

Can you solve these 3 calculus tiebreakers the fastest? (2023 Berkeley Math Tournament)

0:22:40

What Integration Technique Should I Use? (trig sub, u sub, DI method, partial fractions) calculus 2

0:12:59

if x+y=8, find the max of x^y (Lambert W function)

0:05:45

Looks so simple yet my class couldn't figure it out, Reddit r/askmath