If f ( x ) = cos [π] x + cos [π x ], where [y] is the greatest integer function of y then…
Mathematics · JEE Advanced · NTA Exams — Sets, Relations and Functions
If f (x) = cos [π]x + cos [πx], where [y] is the greatest integer function of y then f (π/2) is equal to
- cos 3
- 0
- cos 4
- none of these
Answer
(C) cos 4
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