Purple Comet Math Meet 2020 Q20 Solution - Cauchy Again
John Liu
Purple Comet Math Meet 2020 Q20 Solution - Cauchy Again
6:14
AIME II 2002 Q6 Solution - Divide and Telescope
John Liu
AIME II 2002 Q6 Solution - Divide and Telescope
5:30
AIME I 2004 Q7 Solution - Sums and Products
John Liu
AIME I 2004 Q7 Solution - Sums and Products
4:03
AHSME 1989 Q28 Solution - How Many Ways About It?
John Liu
AHSME 1989 Q28 Solution - How Many Ways About It?
6:00
AIME 2000 Q9 Solution - Demoivre's Strikes Again
John Liu
AIME 2000 Q9 Solution - Demoivre's Strikes Again
3:44
AIME 2019 Q8 Solution - Make A Substitution
John Liu
AIME 2019 Q8 Solution - Make A Substitution
4:26
AIME 2000 Q7 Solution - Pretty Nice Symmetry
John Liu
AIME 2000 Q7 Solution - Pretty Nice Symmetry
3:18
2003 AIME Q9 Solution - The Power of Newton Sums
John Liu
2003 AIME Q9 Solution - The Power of Newton Sums
4:01
AMC 12A 2009 Q25 Solution - Just Keep Going...
John Liu
AMC 12A 2009 Q25 Solution - Just Keep Going...
4:38
Asian Pacific Math Olympiad 1998 Q3 Solution - Expand and Combine
John Liu
Asian Pacific Math Olympiad 1998 Q3 Solution - Expand and Combine
6:08
USAMO 2004 Q5 - The Cooler AM-GM
John Liu
USAMO 2004 Q5 - The Cooler AM-GM
5:40
Lexington Math Tournament 2020 Q15 Solution - Many Possibilities, One Answer
John Liu
Lexington Math Tournament 2020 Q15 Solution - Many Possibilities, One Answer
4:37
Canadian Math Olympiad Q1 Solution - Contradict the Contradiction
John Liu
Canadian Math Olympiad Q1 Solution - Contradict the Contradiction
6:43
AIME 1995 Q13 Solution - Split And Bash
John Liu
AIME 1995 Q13 Solution - Split And Bash
5:01
Purple Comet Math Meet 2021 Q18 Solution - Scalene It Down
John Liu
Purple Comet Math Meet 2021 Q18 Solution - Scalene It Down
4:03
AIME 2020 Q12 Solution - Heavy Lifting
John Liu
AIME 2020 Q12 Solution - Heavy Lifting
5:14
AIME 2015 Q14 Solution - Just Algebra
John Liu
AIME 2015 Q14 Solution - Just Algebra
7:03
Purple Comet Math Meet 2012 Q25 Solution - Sum of Sum of Sums
John Liu
Purple Comet Math Meet 2012 Q25 Solution - Sum of Sum of Sums
3:58
AIME 2005 Q7 Solution - Like Cotton Candy
John Liu
AIME 2005 Q7 Solution - Like Cotton Candy
3:31
Carnegie Mellon Info/Math Competition 2021 Q3 - All In Terms Of...
John Liu
Carnegie Mellon Info/Math Competition 2021 Q3 - All In Terms Of...
4:22
Asian Pacific Math Olympiad 1998 Q2 Solution - Pushing Some Limits
John Liu
Asian Pacific Math Olympiad 1998 Q2 Solution - Pushing Some Limits
8:21
Indonesia Math Olympiad 2017 Q4 Solution - So Close, So Far
John Liu
Indonesia Math Olympiad 2017 Q4 Solution - So Close, So Far
4:56
AIME 1999 Q11 Solution - A (Less) Complex Solution
John Liu
AIME 1999 Q11 Solution - A (Less) Complex Solution
8:29
Purple Comet Math Meet 2017 Q17 Solution - Pretty Rad(ical)
John Liu
Purple Comet Math Meet 2017 Q17 Solution - Pretty Rad(ical)
3:45
AIME 2021 Q13 Solution - Use Binomial Theorem
John Liu
AIME 2021 Q13 Solution - Use Binomial Theorem
8:46
Secant-Tangent Theorem
John Liu
Secant-Tangent Theorem
3:39
Ptolemy's Theorem
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Ptolemy's Theorem
7:33
The Extended Sine Law
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The Extended Sine Law
8:45
Intersecting Chords Theorem
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Intersecting Chords Theorem
8:03
A Special Case - Titu's Lemma
John Liu
A Special Case - Titu's Lemma
11:17
Cauchy-Schwarz IMO Problem
John Liu
Cauchy-Schwarz IMO Problem
10:00
Cauchy-Schwarz with a little bit of Σ
John Liu
Cauchy-Schwarz with a little bit of Σ
7:16
The Cauchy-Schwarz Inequality
John Liu
The Cauchy-Schwarz Inequality
10:17
Proving DeMoivre's With Induction
John Liu
Proving DeMoivre's With Induction
4:19
Rational Root + Remainder Factor Theorem
John Liu
Rational Root + Remainder Factor Theorem
10:55
Triple Angle Formula Proof with DeMoivre's
John Liu
Triple Angle Formula Proof with DeMoivre's
4:18
Very Fast AM-GM Problems
John Liu
Very Fast AM-GM Problems
6:31
Another Vieta's Video
John Liu
Another Vieta's Video
15:43
Trigonometry Isn't That Scary
John Liu
Trigonometry Isn't That Scary
12:46
A Pascal's Triangle Summation
John Liu
A Pascal's Triangle Summation
8:32
Summations Aren't That Scary
John Liu
Summations Aren't That Scary
17:02
Logarithims Aren't That Scary
John Liu
Logarithims Aren't That Scary
10:10
Higher Degree Factoring
John Liu
Higher Degree Factoring
13:22
Introducing My Channel
John Liu
Introducing My Channel
3:48