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Let [x] be the greatest integer less ...

Let [x] be the greatest integer less than or equal to x . Then , at which of the following point(s) the function `f(x) = x cos (pi(x+[x]))` is discontinuous ?

A

`x=1`

B

`x=-1`

C

`x=0`

D

`x=2`

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The correct Answer is:
A, B, D
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