How do I find Ln(-1) ?
Noting that e^(i*pi) = -1 then Ln(-1) is Ln(e^(ipi)) so that Ln(-1) = i*pi
0 + -1.570796326i
Ln(z) = Ln r + i theta (in terms of polar coordinates)
here r = 1. Theta = pi therefore...
--> Ln(-1) = Ln 1 + i*pi
= 0 + i*pi = i*pi
