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## Homework Statement

What will be solutions of http://i26.tinypic.com/jj360y.jpg" complex circles.

## Homework Equations

z=a+bi

## The Attempt at a Solution

a)

[tex]1 \leq Re(z) \leq 2[/tex]

[tex]1 \leq Im(z) \leq 2[/tex]

What about z?

b)

[tex]-2 \leq Re(z) \leq 2[/tex]

[tex]-2 \leq Im(z) \leq 2[/tex]

What about z?

c) I don't know. I think |z|=[tex]\sqrt{2}[/tex]

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