blackpenredpen
1.4M subscribers
My mission is not just to create math tutorials, but also to inspire students to work hard and believe they can do difficult things. That’s why I created my 100-Problem math marathon videos to show them that dedication comes first. My 4000+ math tutorials across my Youtube channels have helped millions of students worldwide to understand the subject better and I will continue to create content. If you would like to directly support my mission, consider becoming a paid member on my Patreon. You will get: - Exclusive math notes and worksheets - Practice tests - Direct support to keep these free public tutorials going Thank you building this with me, Steve
Math is just so fascinating and cool!!!!! (x+y)^4=x^4+y^4?
blackpenredpen · 50K views · 6 days ago
You see nonlinear equations, they see linear algebra! (Harvard-MIT math tournament)
blackpenredpen · 183K views · 2 years ago
x=x+1 has absolutely no solutions, how about sqrt(x)=x+1?
blackpenredpen · 188K views · 3 months ago
the last question on a Harvard-MIT Math Tournament!
blackpenredpen · 634K views · 4 years ago
Calculus Teacher vs. Power Rule Student
blackpenredpen · 377K views · 4 years ago
I discovered an AMAZING approximation of e (by accident)
blackpenredpen · 79K views · 2 months ago
Can x^y=yx?
blackpenredpen · 132K views · 1 year ago
100 Trig Identities: The Ultimate 5-Hour Math Marathon
blackpenredpen · 79K views · 2 weeks ago
It’s not joke, it’s rigorous enough for physics… 😂
blackpenredpen · 173K views · 1 year ago
10 First-Order Differential Equations to Master Before Your Exam
blackpenredpen · 36K views · 2 weeks ago
BELIEVE IN ALGEBRA, NOT CALCULATOR
blackpenredpen · 1.2M views · 7 years ago
Believe in geometry, not squaring both sides!
blackpenredpen · 353K views · 2 years ago
How to get 1/2 of a cylinder?
blackpenredpen · 66K views · 4 weeks ago
Can we solve this square root equation?
blackpenredpen · 43K views · 1 year ago
Factoring a trinomial (what I learned in Taiwan vs in US)
blackpenredpen · 55K views · 1 year ago
Calculus teacher vs L'Hopital's rule students
blackpenredpen · 130K views · 2 years ago
I want all trig functions in one integral!
blackpenredpen · 964K views · 2 years ago
10 Factoring Problems That Separate Experts From Beginners
blackpenredpen · 69K views · 3 weeks ago