Which of the following functions is not periodic

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2x2[x]

sin−1{x}

sin−1cosx

sin−1cosx2

answer is D.

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Detailed Solution

Period of 2x2[x] is 1. Period of sin−1{x} is 1.Period of sin−1cosx is 2π where as sin−1cosx2 is non-periodic.

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