Answer
$2x$
Work Step by Step
$\lfloor x \rfloor$ is a greatest integer that is under or equal to $x$.
Since $x$ itself is an integer, then:
$$\lfloor x \rfloor=x$$
So, the expression becomes:
$$\lfloor x \rfloor+x=x+x=2x$$
College Algebra (11th Edition)
by Lial, Margaret L.; Hornsby John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
0321671791
ISBN 13:
978-0-32167-179-0
Chapter 2 - Review Exercises - Page 278: 79
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