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Videos
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09:45
How Cauchy would find the maximum of sqrt(x)+sqrt(y)
35K views
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2 weeks ago
blackpenredpen
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09:55
Is x^x=0 solvable?
127K views
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3 weeks ago
blackpenredpen
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09:07
Oxford MAT asks: sin(72 degrees)
140K views
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4 months ago
blackpenredpen
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11:25
solving equations but they get increasingly more impossible?
547K views
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2 years ago
blackpenredpen
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11:12
the last question on a Harvard-MIT Math Tournament!
602K views
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2 years ago
blackpenredpen
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11:59
Why is the derivative of e^x equal to e^x?
391K views
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3 years ago
blackpenredpen
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16:59
integration by parts, DI method, VERY EASY
1.4M views
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8 years ago
blackpenredpen
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06:41
What is the equation of the line that’s equal-distance from two given points?
13K views
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2 weeks ago
blackpenredpen
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08:36
how is i^x=2 possible?
247K views
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1 year ago
blackpenredpen
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07:43
ALL solution to a triple exponential equation 8^x+4^x+2^x=14
282K views
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2 years ago
blackpenredpen
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22:40
What Integration Technique Should I Use? (trig sub, u sub, DI method, partial fractions) calculus 2
1.4M views
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5 years ago
blackpenredpen
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07:35
Which is the worst math debate: 0^0, sqrt(1), 0.999...=1, or 12/3(4)?
321K views
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6 months ago
blackpenredpen
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01:57
My Simple YouTube Setup (Blue Snowball microphone, 2013 Macbook Air & markers)
15K views
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6 years ago
blackpenredpen
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10:46
Solving sin(x)^sin(x)=2
404K views
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2 years ago
blackpenredpen
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10:02
Feynman's Technique of Integration
577K views
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4 years ago
blackpenredpen
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01:31:13
First time solving an A-Level maths exam! (90 minutes, uncut)
190K views
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4 months ago
blackpenredpen
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07:31
I want all trig functions in one integral!
693K views
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11 months ago
blackpenredpen
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04:17
arguing with a math PhD friend be like (unscripted, unedited)
479K views
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2 years ago
blackpenredpen
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11:40
the most famous Ramanujan sum 1+2+3+...=-1/12
344K views
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5 years ago
blackpenredpen
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05:56:58
the ultimate integral starter (u sub, IBP, trig sub, partial fractions & more)
1M views
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5 years ago
blackpenredpen
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