Question: Using expressions (6), Sec. 5, for Re z and Imz, show that the hyperbola x2 y2 = 1 can be written z2 + 2

Using expressions (6), Sec. 5, for Re z and Imz, show that the hyperbola x2 − y2 = 1 can be written
z2 + 2 = 2.

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