Question: Aperture show that F(z) = arccosh z gives confocal hyperbolas as stream lines, with foci at z = 1, and that the flow circulates around

Aperture show that F(z) = arccosh z gives confocal hyperbolas as stream lines, with foci at z = ±1, and that the flow circulates around an elliptic cylinder or a plate (the segment from – 1 to 1 in Fig. 416).

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