Let and g be one-to-one functions. Prove that (a) g is one-to-one. (b) (
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Let ƒ and g be one-to-one functions. Prove that
(a) ƒ º g is one-to-one.
(b) (ƒ º g)-¹ (x) = (g-¹ º ƒ-¹)(x).
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