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The domain of the function f(x) = sqrt[...

The domain of the function `f(x) = sqrt[(x-7)/(x-9)]` is

A

`(-oo, 7] uu (9, oo)`

B

`(-oo, 7) uu [9, oo)`

C

`(-oo, 7) uu (9, oo)`

D

`(-oo, 7] uu [9, oo )`

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The correct Answer is:
A
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HIMALAYA PUBLICATION-SETS,RELATIONS AND FUNCTIONS-QUESTION BANK
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  3. The domain of the function f(x) = sqrt[(x-7)/(x-9)] is

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