Question

z2-4
dz evaluated anticlockwise around the circle 1z - il = 2, is -
z2+4
(a)
–41
(b) 0
(c) 2 +
(d) 2-0​

Answer 1

Answer:

2+4=6

a)2+4-41=-35

b)2+4+0=6

c)2+4+2=8

d)2+4+2-0=8