Answer
It is defined, $f(0)=3$
Work Step by Step
0 is in the domain of $f$.
$f(0)=\sqrt {9-0^2}=\sqrt 9=3$
Finite Math and Applied Calculus (6th Edition)
by Waner, Stefan; Costenoble, Steven
Published by
Brooks Cole
ISBN 10:
1133607705
ISBN 13:
978-1-13360-770-0
Chapter 1 - Section 1.1 - Functions from the Numerical, Algebraic, and Graphical Viewpoints - Exercises - Page 52: 12a
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