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X
Y
[ 0 , ∞)
[ 0 , ∞)
00
(0 , ∞)
481A(1B)
X
Y
(-∞ , ∞) R
[ 0 , ∞)
0
0
y
(0 , ∞) (-∞ , 0)
481A(1B)
X
Y
(-∞ , ∞) R
0
0
(-∞ , ∞)
(-∞ , ∞) R
49(2A)(2B)(2C)
54(14)(13)
g(x) = ∣x – 8 ∣g(x) = ∣x – 1 ∣-2
54(15)
f(x) = ∣x∣
g(x)4
f(x)