JEE MATHEMATICS MCQ: FUNCTIONS

1 Easy

1 of 1

Application +4 | -1

Find the number of integers not in the domain of

f(x)=\cos ^{-1}\left(\frac{2-x}{2 x}\right)

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Correct option: A

Option A (2) is correct because there are two integers that make the argument of the inverse cosine function outside the range of [-1, 1].

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f\left( x \right) = x - \left[ x \right]

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S=\left\{x: f(x)=f^{-1}(x)\right\}