@blackpenredpen
  @blackpenredpen
blackpenredpen | You do (x+y)^2, I do ln(xy), but use calculus! @blackpenredpen | Uploaded 3 years ago | Updated 4 hours ago
"My student did it again" shirt: amazon.com/dp/B0C5B22KX4/ref=cm_sw_r_as_gl_api_gl_i_KQZZCZA7D2V6ZXYXSTS0?linkCode=ml2&tag=blackpenredpe-20

We can expand (x+y)^2 by using geometry but how about calculus?
(x+y)^2=x^2+2xy+y^2 by using calculus: ๐Ÿ‘‰ youtu.be/BWSVUg9aV3w
Proving all the log properties with its integral definition: ๐Ÿ‘‰ youtu.be/4D-M5qB_l6k

The cat t-shirt: bit.ly/3elH3Vt
10% off with the code "WELCOME10"

0:00 (x+y)^2 with geometry
2:06 integral definition of x and x^2
3:05 integral definition of ln(x)
5:08 proving ln(xy)=ln(x)+ln(y) with its integral definition

Equipment:
๐Ÿ‘‰ Expo Markers (black, red, blue): amzn.to/3yYLqOf
๐Ÿ‘‰ The whiteboard: amzn.to/2R38KX7
๐Ÿ‘‰ Ultimate Integrals On Your Wall: teespring.com/calc-2-integrals-on-wall
---------------------------------------------------------------------------------------------------
***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 O'Corrigan 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 ล˜ehรกk 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
---------------------------------------------------------------------------------------------------
๐Ÿ’ช If you would also like to support this channel and have your name in the video description, then you could become my patron here patreon.com/blackpenredpen
You do (x+y)^2, I do ln(xy), but use calculus!finding the volume of a Krispy Kreme donut by using calculus (washer method vs shell method)Why I dont teach LIATE (integration by parts trick)the last question on my precalculus testQuadratic formula but (a, b, c) goes to (0, 0, 0)if x+y=8, find the max of x^y (Lambert W function)

You do (x+y)^2, I do ln(xy), but use calculus! @blackpenredpen

SHARE TO X SHARE TO REDDIT SHARE TO FACEBOOK WALLPAPER