Write the inequations that represent the interval and state whether the interval is bounded or unbounded: $(-\infty, \infty)$
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Answer
$(-\infty, \infty)$ Here, $x$ takes values between $-\infty$ and $\infty$ $\therefore$ the required inequation is $-\infty<\mathrm{x}<\infty$ $\therefore$ it is an unbounded (open) interval.
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