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Question

If f(x)=7x+2x+1+1x1, then domain of the function is

A
R{1}
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B
R{1,0,1}
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C
R{0}
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D
R
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Solution

The correct option is B R{1,0,1}
f(x)=7x+2x+1+1x1

Clearly, function is not defined at x=0,±1
Hence, domain of the function is R{1,0,1}

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