Question: If f(x) = x2 - 1 and g(x) = 2/x, find formulas for the following and state their domains. (a) (f g) (x) (b)

If f(x) = √x2 - 1 and g(x) = 2/x, find formulas for the following and state their domains.
(a) (f ͦ g) (x)
(b) f4(x) + g4 (x)
(c) (f ͦ g) (x)
(d) (g ͦ f) (x)

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