Question

Can anyone explain the significance of Z to me in terms of i and everything else? I'm lost.

Answer 1

what

Answer 2

Z is the symbol of either integer or complex numbers .

Answer 3

Z is used to refer to a complex number, often written as x + i*y where i is sqrt(-1)
This gives some info on complex numbers
http://www.khanacademy.org/math/algebra/complex-numbers/v/complex-numbers--part-1

if you have a specific question, you will have to post it.

Answer 4

when our level is higher we denote complex numbers by Z

Answer 5

Okay thank you guys so much! :D