Getting Ready for the Next Section

125. 1
127. $- 2$ $- 2$
129. 49
131. $3 \sqrt{2}$ $3 \sqrt{2}$
133. $f^{- 1} (x) = \frac{x - 4}{3};$ $f^{- 1} (x) = \frac{x - 4}{3};$ Domain and range of $f^{- 1}$ $f^{- 1}$ are $(- \infty, \infty) .$ $(- \infty, \infty) .$
135. $f^{- 1} (x) = x^{2}, x \geq 0;$ $f^{- 1} (x) = x^{2}, x \geq 0;$ Domain and range of $f^{- 1}$ $f^{- 1}$ are $[0, \infty) .$ $[0, \infty) .$
137. $f^{- 1} (x) = 1 + \frac{1}{x};$ $f^{- 1} (x) = 1 + \frac{1}{x};$ Domain of $f^{- 1} = (- \infty, 0) \cup (0, \infty);$ $f^{- 1} = (- \infty, 0) \cup (0, \infty);$ range of $f^{- 1} = (- \infty, 1) \cup (1, \infty) .$ $f^{- 1} = (- \infty, 1) \cup (1, \infty) .$

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Table of Contents for Getting Ready for the Next Section