Sketch the following sets and determine which are domains:
a) |z - 2 + i| ≤ 1;
b) |2z + 3| > 4;
c) lm z > 1;
d) lm z = 1;
e) 0 ≤ arg z ≤ π/4 (z ≠ 0);
f) |z - 4| ≥ |z|.
Sketch the following sets and determine which are domains:
a) |z - 2 + i| ≤ 1;
b) |2z + 3| > 4;
c) lm z > 1;
d) lm z = 1;
e) 0 ≤ arg z ≤ π/4 (z ≠ 0);
f) |z - 4| ≥ |z|.