College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 2, Functions - Section 2.8 - One-to-One Functions and their Inverses - 2.8 Exercises: 61

Answer

$f^{-1}(x) = \sqrt {4 - x}, x\geq0$

Work Step by Step

$f(x) = 4 - x^{2}$ $y= 4 - x^{2}$ $4 - y = x^{2}$ $\sqrt {4 - y} = x$ $\sqrt {4 - x} = f^{-1}(x)$
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