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IfI=int(-20pi)^(20pi)|sinx|[sinx]dx(w h ...

`IfI=int_(-20pi)^(20pi)|sinx|[sinx]dx(w h e r e[dot]` denotes the greatest integer function), then the value of `I` is `-40` (b) 40 (c) 20 (d) `-20`

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