Question
Write the domain of the following real function:
$f(x)=\frac{2 x+1}{x-9}$
$f(x)=\frac{2 x+1}{x-9}$
✓
Answer
$f(x)=\frac{2 x+1}{x-9}$The denominator should not be zero as the function is a real function.∴ The domain = R – {9}
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