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Question

The range of the function f(x) =x22x when x 2 is

A
R
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B
R - {1}
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C
{-1}
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D
R-{-1}
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Solution

The correct option is C {-1}
f(x)=x22x=x2x2=1 if x 2
Range of f = {-1}
The correct answer is (c).

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