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blackpenredpen
@blackpenredpen
2.4K
Video Count
228.7M
Video View
1.4M
Subscriber
#9,639
United States Rank
#40,291
Global Rank
2.4K
Video Count
228.7M
Video View
1.4M
Subscriber
#9,639
United States Rank
#40,291
Global Rank
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Title A-Z
6:34
Why do mathematicians think disc=square?
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2 weeks ago
4:28
How to welcome a math PhD friend at the airport! @drpeyam
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15:14
THIS LIMIT IS WRONG but how do we prove it?
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1 month ago
10:31
Can f'(x)=f^-1(x)?
23.8K
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1 month ago
12:45
Only math majors would do this! (epsilon-delta proof for a simple limit)
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18
1 month ago
7:41
How to find a delta for a specific epsilon (epsilon-delta definition of a limit)
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2 months ago
11:39
Epsilon-delta proof without THAT TRICK!
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2 months ago
22:51
Brilliant Trig Identity Challenge!
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2 months ago
8:55
That chain rule joke!
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3 months ago
6:56
Trying my first abstract algebra problem in 14 years!
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4 months ago
11:41
Why are integrals SO HARD? (My 5 reasons and how to prepare for integrals)
20.9K
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4 months ago
2:36
I’m sorry, I have been saying “let x=1” wrong for 13 years
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4 months ago
7:22
Can x^y=yx?
73.6K
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4 months ago
9:39
The square root of the 2 by 2 zero matrix
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4 months ago
16:37
Calculus students don’t use these inequalities anymore!
23.3K
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5 months ago
10:58
Factoring a trinomial (what I learned in Taiwan vs in US)
46.8K
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5 months ago
8:05
Here's how I would solve this high school math question without calculus (finding extrema of trig)
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5 months ago
8:50
Most calculus students won't use the easy solution
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5 months ago
7:41
How to evaluate an infinite series with complex numbers
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5 months ago
9:16
If 1+z+z^2+z^3+z^4+z^5+z^6=0, then z+z^2+z^4=?
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5 months ago
12:54
Can A^2+I=0?
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5 months ago
7:25
The perfect trick to solve this equation (two-cube-root!)
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6 months ago
11:57
A taste of "when there are no numbers in math"
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6 months ago
8:41
Believe in calculus, NOT pictures!
10.4K
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6 months ago
36:34
100 integrals (remake + solutions) full collection on Patreon
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20
7 months ago
10:19
Big Brilliant Integral
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7 months ago
16:29
What Integration Technique Do I Use? Q1 to Q5 (trig sub, u sub, DI method, partial fraction) calc 2
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8 months ago
1:00:18
The last virtual office hour! (Chegg Trig & Precalculus)
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8 months ago
7:50
The coolest way to solve an equation!
33.9K
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8 months ago
4:28
cube roots of i
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8 months ago
14:47
All solutions to x^2=2^x (remake+notes)
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8 months ago
1:00:26
A quick guide to finding the range of a fuction! Chegg Trig & Precalculus office hour
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8 months ago
16:50
I finally found the cubic vertex formula without calculus!
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8 months ago
1:00:20
Are they the same function? Be careful with the domain! Chegg Trig/Precalculus office hour
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9 months ago
11:43
Making a cubic equation have a double root
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9 months ago
20:37
5 Math Video Categories That Grew My Channel (12 Years on YouTube)
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9 months ago
1:00:24
How to solve logarithmic equations! Chegg Trig & Precalculus Office Hours with blackpenredpen
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9 months ago
22:01
My first x^x congruence: x^x≡2 (mod5)
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9 months ago
1:00:12
Let's solve exponential equations! Chegg Trig & Precalculus Office Hour!
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9 months ago
1:00:12
How to solve HARD polynomial equations! Chegg Trig & Precalculus Office Hours
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9 months ago
9:58
Math for fun: a 2nd derivative rule?
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9 months ago
59:43
sin(x)+cos(x)=? Vertical asymptote vs hole? Inverse of (ax+b)/(cx+d)=? Chegg Precalculus office hour
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9 months ago
14:39
The 50-Ball Problem
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10 months ago
4:21
Which is bigger: a^3+b^3 or c^3?
17.4K
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10 months ago
1:00:03
Be careful when you use the law of sines! What's sin(18 deg)? & more! Chegg Precalculus Office Hours
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10 months ago
10:42
"Dear Bprp, I have a pretty unusual question": If sqrt(a+sqrt(a+sqrt(a)))=128, then floor(a)=?
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10 months ago
5:25:41
NONSTOP: 100 basic precalculus equations & inequalities
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10 months ago
59:47
How to solve a tricky domain problem and more? Chegg Trig & Precalculus Office Hours
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10 months ago
22:31
"This fully tests your understanding of calc 1 differentiation & integration" Cambridge STEP 1 exam
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10 months ago
59:32
Ask me Trig! How do you solve tricky trigonometric identity problems? (Chegg Virtual Office Hours)
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10 months ago
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