Accuplacer Aaf Quiz
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FUNCTIONS
Question 1
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Let
f
(
x
)
=
{
2
x
+
1
if
x
<
0
2
if
0
≤
x
<
2
x
−
1
if
x
≥
2
f(x) = \begin{cases} 2x+1 & \text{if } x < 0 \\ 2 & \text{if } 0 \le x < 2 \\ x-1 & \text{if } x \ge 2 \end{cases}
f
(
x
)
=
⎩
⎨
⎧
2
x
+
1
2
x
−
1
if
x
<
0
if
0
≤
x
<
2
if
x
≥
2
. How many distinct solutions does the equation
f
(
x
)
=
x
f(x) = x
f
(
x
)
=
x
have?
A
0
B
1
C
2
D
3
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