Question: Show that (x) = (x 2 + 1) 1 is one-to-one on (, 0], and find a formula for 1 for this domain of

Show that ƒ(x) = (x2 + 1)−1 is one-to-one on (−∞, 0], and find a formula for ƒ−1 for this domain of ƒ.

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