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Functions

Algebra Level 3

If the function \(f : \mathbb{R} \rightarrow \mathbb{R} , f(x) = \cos(\dfrac{\pi}{2}[x])\) is an onto function, then the co-domain of this function is:-

\[[-1, 1)\] \[[0, 1)\] \[\{-1, 0\}\] \[\{ -1, 0, 1\}\]

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by Ashish Siva

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