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Question

Which of the following option(s) is/are correct for exponential function f(x)=ax ?

A
Domain of f(x) is R
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B
Range of f(x) is (0,)
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C
aR{0,1}
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D
a(0,1)(1,)
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Solution

The correct options are
A Domain of f(x) is R
B Range of f(x) is (0,)
D a(0,1)(1,)
For f(x)=ax to be an exponential function,
a>0 and a1
Clearly, domain is R
Since, a>0ax>0
Therefore, range is (0,)

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