Here are the values and computations that give them:
x
1
8
1
4
1
2
1
2
4
16
f
(
x
) = log
2
x
-
3
-
2
-
1
0
1
2
4
2
-
3
= 1/8
2
-
2
= 1/4
2
-
1
= 1/2
2
0
= 1
2
1
= 2
2
2
= 4
2
4
= 16
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