The domain of the function fx-cos -1 1- x - 2 is

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Continuity in an Interval

The domain of...

Question

The domain of the function $f (x) = {cos}^{- 1} (\frac{1 - | x |}{2})$ is

(- \infty, - 3) \cup (3, \infty)

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[- 3, 3]

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(- \infty, - 3] \cup [3, \infty)

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f (x) = \sqrt{2 - 2 x - x^{2}}

[- \sqrt{3}, \sqrt{3}]

[- 1 - \sqrt{3}, - 1 + \sqrt{3}]

[- 2 - \sqrt{3}, - 2 + \sqrt{3}]

T h e d o m a i n o f t h e f u n c t i o n f (x) = {[9^{x} + 27^{\frac{2}{3} (x - 2)} - 219 - 3^{2 (x - 1)}]}^{\frac{1}{4}}

f (x) = {⎡ ⎢ ⎣ 9^{x} + 27^{\frac{2}{3} (x - 2)} - 219 - 3^{2 (x - 1)} ⎤ ⎥ ⎦}^{\frac{1}{4}}

f (x) = \sqrt{2 - 2 x - x^{2}}

f (x) = \frac{1}{\sqrt{{[x]}^{2} - 3 [x] + 2}}

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