Problem with complex numbers!!!!!?

0 ⤊

Plz help!!!!:

If for the number zεC is /z-i/=1, prove that 4<=/z+4+2i/<=6

(/..../ is the modulus)

2007-09-26 00:07:52 · 2 answers · asked by Joey 1 in Science & Mathematics ➔ Mathematics

Suppose z = 1 + i. Then |z - i| = 1. But z + 4 + 2 = 7 + i, and the modulus is sqrt(50). Oops, not between 4 and 6.

2007-09-26 04:41:13 · answer #1 · answered by Tony 7 · 0⤊ 0⤋

I’m amazed with your optimism;

2007-09-26 00:22:52 · answer #2 · answered by Anonymous · 0⤊ 0⤋