College Algebra 7th Edition

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

Chapter 2, Functions - Chapter 2 Review - Exercises: 19

Answer

the domain is: $\{x|x\neq 0,\ -1,\ -2\}$

Work Step by Step

We are given: $f(x)= \frac{1}{x}+\frac{1}{x+1}+\frac{1}{x+2}$ We know that the denominators can't equal 0, so: $x\ne 0$ $x+1\ne 0$ $x\ne -1$ $x+2\ne 0$ $x\ne -2$ Thus the domain is: $\{x|x\neq 0,\ -1,\ -2\}$.
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