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f(x) = [x-1]Cos((2x-1)/2)pi , then f(x) ...

`f(x) = [x-1]Cos((2x-1)/2)pi` , then `f(x)` is

A

`f(x)` is continous at `x in R`

B

`f(x)` is discontinous at `x=1`

C

`f(x)` is discontinous at `x=2`

D

`f(x)` is discontinous at all integers except 2

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