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Question

The range of the function f(x)=9x2 is

A
(0,3)
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B
[0,3]
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C
(0,3]
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D
[0,3)
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Solution

The correct option is B [0,3]
Given that f(x)=9x2
The domain of the given function is x[3,3]
3x3
0x29
9x20
09x29
09x23
0f(x)3

The range of the function is [0,3].

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