- #1
Fellowroot
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- 0
Homework Statement
Sketch the graph
|Re(z)|>2
Homework Equations
z=x+iy
The Attempt at a Solution
|Re(z)|>2
|Re(x+iy)|>2
|x|>2
|x-0|>2, this is a circle centered at zero with radius 2
4. My question
What I'm having a hard time with is the | | notation.
Is this the absolute value, or modulus, or something else.
Wolfram Alpha says its an absolute value graph (that I understand) but my books says this is the form of a circle. Which is it?
http://www.wolframalpha.com/input/?i=|Re(z)|>2
I graphed a circle on my paper r=2 at (0,0) but I don't know which part to shade, the inside of the circle or the outside? How can I plug in numbers to test True and False? I know how to graph inequalities in real but complex I'm having trouble with.
Thanks.