First slide

Introduction to real valued functions

Question

The range of $\sqrt{| x | - x}$ is

Easy

A

$(0, \infty)$
B

$[0, \infty)$
C

$(- \infty, 0]$
D

$(- \infty, 0)$

Solution

$\sqrt{| x | - x} \geq 0 \Rightarrow$ Range $= [0, \infty)$

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