Editor
Editor
 Sep 18, 2022
0
Which of the following is not the rule for a function?
Difficulty: Easy
A: 
$f(x)=4 \pm3x$
B: 
$f(x)=\sqrt{-x}$
C: 
$f(x)=\sqrt{x}$
D: 
f(x)=5
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NETNUST Entry TestMathematicsFunctions and Limits