Range of f(x) = –|2x 2 – 4| is
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11
Answer:
( 0, -∞ )
Step-by-step explanation:
f(x) = –|2x^2 – 4|
= -2 | x^2 – 2|
= -2 | x + √2| | x - √2|
= 0 ; x = ±√2
< 0 ; x € (-∞, -√2) U ( √2, ∞)
= ( 0, -4) ; x€ ( -√2, √2)
hence...
R [f((x)] =(-∞,0] U [0,-4] U [-4,0]U[0,-∞)
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1
Answer:
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