JEE MATHEMATICS MCQ: FUNCTIONS

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Application +4 | -1

f(x)=\cos \left[\pi^2\right] x+\cos \left[-\pi^2\right] x

, where

[x]

stands for the greatest integer function, then

View answer and explanation

Correct option: C

f(-\pi)=0

Option C (

f(-\pi)=0

) is correct because substituting

-\pi

into the function and using the greatest integer function properties yields 0.

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