Determine the domain of $f(x) = cos(x)$. ○(-∞, ∞) ○(-1, 1) ○(-∞, 1) U (1, ∞) ○[-1, 1]
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Step 1: The cosine function is defined for all real numbers. Show more…
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$f(x)=2 \cos (4 x+\pi)-1$ Multiple Choice Which of the following is the domain of $f ?$ (A) $[-\pi, \pi]$ (B) [-3,1] (C) [-1,4] (D) $(-\infty, \infty)$ (E) $x \neq 0$
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The domain of $\mathrm{f}(\mathrm{x})=[1 / \sqrt{(}|\cos \mathrm{x}|+\cos \mathrm{x})]$ is (a) $[\{[(4 n-1) \pi] / 2\},\{[(4 n+1) \pi] / 2\}]$ (b) $[\{[(4 n+1) \pi] / 2\},\{[(4 n-1) \pi] / 2\}]$ (c) $(\mathrm{n} \pi,(\mathrm{n}+1) \pi)$ (d) $(-2 n \pi, 2 n \pi)$
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