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Question

The range of f(x)=x29x3 is

A
(,6)(6,)
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B
(,)
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C
R{9}
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D
(0,)
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Solution

The correct option is B (,6)(6,)
f(x)=x29x3
x30
x3
f(x)=x+3,x3
Range of f(x) is (,)6

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