Complex analysis： Exp, log, sin, cos | Richard E Borcherds https://tube.cosmicflow.space/videos/watch/eb9aade0-5ab7-48d0-9402-f94357636c9c This lecture is part of an online undergraduate course on complex analys We show how to extend the elementary transcendental functions (exp, log, sin, cos, and so on) to complex numbers. In particular we describe Euler's discovery that exponential and trigonometric functions are essentially the same, and give some applications. For the other lectures in the course see https://www.youtube.com/playlist?list=PL8yHsr3EFj537_iYA5QrvwhvMlpkJ1yGN Thu, 08 Oct 2026 17:44:04 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://tube.cosmicflow.space Complex analysis： Exp, log, sin, cos | Richard E Borcherds https://tube.cosmicflow.space/lazy-static/avatars/8891227d-e60f-40aa-88be-4c856c6a73dc.png https://tube.cosmicflow.space/videos/watch/eb9aade0-5ab7-48d0-9402-f94357636c9c All rights reserved, unless otherwise specified in the terms specified at https://tube.cosmicflow.space/about and potential licenses granted by each content's rightholder.