Question: 42. Show that for |x| < 1, d tanh-1 = + 3 2.3 + 25 55 1 tanh-1r

42. Show that for |x| < 1, d tanh-1 = + 3

42. Show that for |x| < 1, d tanh-1 = + 3 2.3 + 25 55 1 tanh-1r

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