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Mathematics
Mathematics
Problem
If
z
z
z
is a complex number, then
z
2
+
z
ˉ
2
=
2
z^2 + \bar{z}^2 = 2
z
2
+
z
ˉ
2
=
2
represents - (A) a circle (B) a straight line (C) a hyperbola (D) an ellipse
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