The domain of $f (x) = tan 2 x$ is

(- \infty, \infty)

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R - {(2 n + 1) \frac{π}{4}, n \in Z}

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R - {(n + 1) \frac{π}{4}, n \in Z}

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R - {n π, n \in Z}

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Solution

The correct option is A $R - {(2 n + 1) \frac{π}{4}, n \in Z}$
$f (x)$ is defined for $2 x \neq (2 n + 1) \frac{π}{2}$
$\Rightarrow x \neq (2 n + 1) \frac{π}{4}$
$∴$ Domain of $f (x)$ is $R - (2 n + 1) \frac{π}{4}$

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