Complex Integration Using Branch Cuts

Опубликовано: 17 Июнь 2026
на канале: Faculty of Khan
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This video covers #ComplexIntegration of a natural logarithm using #BranchCuts to convert the natural log from a multiple-valued function to a single-valued function. This integration involved using an elaborately constructed contour, the #ResidueTheorem, and the ML inequality (link:    • Complex Integration: The ML Inequality Pro...  ) to arrive at the final answer.

Questions/requests? Let me know in the comments!

Pre-reqs: Every video before this one in my #ComplexVariables playlist, especially the video on Branch Points and Branch Cuts right before this:    • Complex Variables and Functions  

Lecture Notes: https://drive.google.com/open?id=1JHi...
Patreon: https://www.patreon.com/user?u=4354534
Twitter:   / facultyofkhan  

Special thanks to my Patrons:
Cesar Garza
Daigo Saito
Alvin Barnabas
Damjan
Yenyo Pal
Lisa Bouchard
Patapom
Gabriel Sommer
Eugene Bulkin
Adam Pesl
Yiu Chong
René Gastelumendi

EDIT: Note that at 9:00, there should be a less than or equal to sign, since the modulus of the integral is less than or equal to the integral of the modulus. Thanks to some of the commenters below for pointing that out!