596C.C3.5 The Principal Square Root of a Complex Number

**Principal square root function in Desmos:** https://www.desmos.com/calculator/do61nnowv6 0:00 Introduction 1:00 "Branch" of a Complex Function 2:00 Example with f(z) = z² 2:58 Domains of One-to-One-ness for f(z) = z² 4:50 Branches of f(z) = z² 9:28 The Principal Square Root 11:07 Examples 14:09 Domain of Principal Square Root 15:29 Discontinuity of Principal Square Root 17:15 Wrapup