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Thomas Calculus 13th [Solutions]

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Section 1.6 Inverse Functions and Logarithms 35<br />

15. Domain: 0 x 6, Range: 0 y 3 16. Domain: 2 x 1, Range: 1 y < 3<br />

17. The graph is symmetric about y = x.<br />

(b)<br />

2 2 2 2 2 2 2 1<br />

y 1 x y 1 x x 1 y x 1 y y 1 x f ( x)<br />

18. (a) The graph is symmetric about y = x. (b)<br />

1 1 1 1<br />

y x y f ( x)<br />

x y x<br />

19. Step 1:<br />

Step 2:<br />

2 2<br />

y x 1 x y 1 x y 1<br />

1<br />

y x 1 f ( x)<br />

20. Step 1:<br />

Step 2:<br />

2<br />

y x x y , since x 0.<br />

y x f<br />

1 ( x)<br />

21. Step 1:<br />

Step 2:<br />

3 3 1/3<br />

y x 1 x y 1 x ( y 1)<br />

3<br />

1<br />

y x 1 f ( x)<br />

22. Step 1:<br />

Step 2:<br />

2 2<br />

y x 2x 1 y ( x 1) y x 1, since x 1 x 1<br />

1<br />

y 1 x f ( x)<br />

y<br />

23. Step 1:<br />

Step 2:<br />

2<br />

y ( x 1) y x 1, since x 1 x y 1<br />

1<br />

y x 1 f ( x)<br />

Copyright<br />

2014 Pearson Education, Inc.

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