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If f(x)=sin[pi^2]x+sin[-pi^2]x ,w h e r ...

If `f(x)=sin[pi^2]x+sin[-pi^2]x ,w h e r e[x]` denotes the greatest integer less than or equal to `f(pi//2)=1` (b) `f(pi)=2` (c) `f(pi//4)=-1` (d) none of these

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