Complex analysis: Exp, log, sin, cos

From a channel Lumen includes in full: Fields medallist Richard Borcherds posts complete graduate lecture courses in algebraic geometry, Lie groups, commutative algebra and other topics, taught as at Berkeley.

A 32-minute video from Richard E Borcherds's catalogue; the title names its topic.

Video by Richard E Borcherds, played through YouTube's embedded player.