blackpenredpen | Meet the 94-year-old calculus teacher! @ycmathematicsphysicsandche5659 @blackpenredpen | Uploaded 5 months ago | Updated 9 hours ago
Thanks to the YouTube algorithm, I discovered Mr. Feng, a 94-year-old calculus teacher, @ycmathematicsphysicsandche5659 . He said in his note that teaching makes him happy and makes his life meaningful, which I resonate with so much. I want to make a video to introduce him to you! Please consider subscribing to his channel and supporting what he does. Thank you.
The solution to the derivative challenge problem: youtu.be/V9rrLp2CpPw?si=SadRcaYGZUVruIuj

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Big thanks to my Patrons for the full-marathon support!
Ben D, Grant S, Erik S. Mark M, Phillippe S. Michael Z, Nicole D.

💪 Support this channel and get my math notes by becoming a patron: patreon.com/blackpenredpen

The most fun way of solving this quartic equation

Does it converge? (part 3: alternating series, ratio test, & root test)

My First Harvard MIT Math Tournament Problem

$100 integrals part 2 (this is passion!) 100 integrals, part 2! This video features calculus 3 integrals and non-elementary integrals with special functions. We use a variety of integration techniques, including integration by parts, u-substitution, trig substitution, partial fraction decomposition, reverse power rule, integral reduction formulas, Weierstrass substitution, improper integrals, Feynmans technique, power series, the Gaussian Integral, double integrals, Jacobian, polar coordinates, and more! Join us in this nonstop calculus adventure and boost your integration skills. #calculus #integration #mathchallenge #nonstop #specialfunctions #techniques #improperintegrals #polarcoordinates #powerseries #feynmantechnique Get the file & answer key on my Patreon 👉 https://www.patreon.com/posts/102752235 100 integrals (original) 👉 https://youtu.be/dgm4-3-Iv3s Big thanks to my Patrons for the full-marathon support! Ben D, Grant S, Mark M, Phillippe S. Thanks to Nathaniel Barnett for the time stamps! 0:00 100 integrals part 2! Q1, 0:00:46 integral of 2022 Q2, 0:03:03 integral by trig identities and u-sub Q3, 0:08:23 integral by trig sub Q4, 0:12:34 integral by u-sub and integration by parts Q5, 0:17:02 Q6, 0:19:42 Q7, 0:30:07 Q8, 0:33:45 Q9, 0:37:58 Q10, 0:45:16 Q11, 0:48:30 Q12, 0:53:16 Q13, 0:59:06 Q14, 0:58:34 Q15, 1:00:41 Q16, 1:04:56 Q17, 1:07:27 Q18, 1:12:27 Q19, 1:14:42 Q20, 1:18:50 Q21, 1:22:30 integral of x^n*e^x Q22, 1:25:14 integral of (ln(x))^n Q23, 1:27:40 integral of sin^n(x) Q24, 1:37:44 integral of tan^n(x) Q25, 1:42:58 integral of sec^n(x) Q26, 1:52:14 Q27, 1:54:45 Q28, 1:57:45 Q29, 2:01:49 Q30, 2:04:49 Q31, 2:24:38 integral of sec(x) by Weierstrass Substitution Q32, 2:27:17 Q33, 2:31:25 Q34, 2:35:00 Q35, 2:37:20 Q36, 2:42:02 Q37, 2:44:24 Q38, 2:50:18 Q39, 2:51:53 Q40, 2:56:12 Q41, 3:00:21 Q42, 3:04:07 Q43, 3:06:45 Q44, 3:11:58 Q45, 3:19:02 Q46, 3:24:19 Q47, 3:28:36 Q48, 3:31:54 Q49, 3:33:44 Q50, 3:43:40 Q51, 3:49:16 Q52, 3:55:44 Q53, 3:59:50 Q54, 4:03:18 integral of x/(1+e^x) Q55, 4:08:21 integral of e^x/(1+x) Q56, 4:09:21 integral of e^e^x Q57, 4:10:27 integral of ln(ln(x)) Q58, 4:12:40 Q59, 4:14:28 Q60, 4:19:48 integral of the Lambert W function Q61, 4:25:39 improper integral of 1/x^p from 1 to inf Q62, 4:28:52 Q63, 4:29:32 Q64, 4:32:55 Q65, 4:35:29 the Gaussian Integral Q66, 4:50:04 Q67, 4:55:42 Q68, 4:58:36 integral of ln(x) from 0 to 1 Q69, 5:02:56 Q70, 5:10:32 Q71, 5:13:24 integral of ln(x)/(x-1) from 0 to 1 Q72, 5:21:08 integral of (x-1)/ln(x) from 0 to 1 Q73, 5:28:08 integral by symmetry Q74, 5:34:14 integral by even and odd function properties Q75, 5:43:16 Q76, 5:51:17 Q77, 5:52:58 Q78, 6:00:28 the Dirichlet integral, the integral of sin(x)/x from 0 to inf Q79, 6:08:10 Q80, 6:13:28 Q81, 6:37:48 double integral & change the order of integration Q82, 6:45:45 Q83, 6:49:24 Q84, 6:54:00 Q85, 6:57:25 Q86, 7:03:50 Q87, 7:07:33 Q88, 7:11:11 Q89, 7:17:27 Q90, 7:21:37 Q91, 7:28:52 Q92, 7:37:47 Q93, 7:55:15 Q94, 8:07:00 Q95, 8:10:24 Q96, 8:21:05 Q97, 8:22:55 Q98, 8:26: 30 Q99, 8:29: 59 Q100, 8:33:33 Q101, 8:38:32 the BIG integral from the Berkeley Math Tournament *Thanks to ALL my lovely patrons for supporting my channel and believing in what I do* AP-IP Ben Delo Marcelo Silva Ehud Ezra 3blue1brown Joseph DeStefano Mark Mann Philippe Zivan Sussholz AlkanKondo89 Adam Quentin Colley Gary Tugan Stephen Stofka Alex Dodge Gary Huntress Alison Hansel Delton Ding Klemens Christopher Ursich buda Vincent Poirier Toma Kolev Tibees Bob Maxell A.B.C Cristian Navarro Jan Bormans Galios Theorist Robert Sundling Stuart Wurtman Nick S William OCorrigan Ron Jensen Patapom Daniel Kahn Lea Denise James Steven Ridgway Jason Bucata Mirko Schultz xeioex Jean-Manuel Izaret Jason Clement robert huff Julian Moik Hiu Fung Lam Ronald Bryant Jan Řehák Robert Toltowicz Angel Marchev, Jr. Antonio Luiz Brandao SquadriWilliam Laderer Natasha Caron Yevonnael Andrew Angel Marchev Sam Padilla ScienceBro Ryan Bingham Papa Fassi Hoang Nguyen Arun Iyengar Michael Miller Sandun Panthangi Skorj Olafsen Riley Faison Rolf Waefler Andrew Jack Ingham P Dwag Jason Kevin Davis Franco Tejero Klasseh Khornate Richard Payne Witek Mozga Brandon Smith Jan Lukas Kiermeyer Ralph Sato Kischel Nair Carsten Milkau Keith Kevelson Christoph Hipp Witness Forest Roberts Abd-alijaleel Laraki Anthony Bruent-Bessette Samuel Gronwold Tyler Bennett christopher careta Troy R Katy Lap C Niltiac, Stealer of Souls Jon Daivd R meh Tom Noa Overloop Jude Khine R3factor. Jasmine Soni L wan na Marcelo Silva Samuel N$

the impossible integral of e^(-x^2) & the error function

Meet the 94-year-old calculus teacher! @ycmathematicsphysicsandche5659 @blackpenredpen