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Argand diagram
Cartesian
Multiplication and division
Loci and roots
Proofs
Complex plane
-5
-5i
-4
-4i
-3
-3i
-2
-2i
-1
-1i
0
0
1
1i
2
2i
3
3i
4
4i
5
5i
Re
Im
z
z
Cartesian
2 + 1.5i
|z|
2.5
arg(z)
0.64