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If f(x)=sinx ,AAx in [0,pi/2],f(x)+f(pi-...

If `f(x)=sinx ,AAx in [0,pi/2],f(x)+f(pi-x)=2,AAx in (pi/2,pi)a n df(x)=f(2pi-x),AAx in (pi,2pi),` then the area enclosed by `y=f(x)` and the x-axis is `pis qdotu n i t s` (b) `2pis qdotu n i t s` `2s qdotu n i t s` (d) `4s qdotu n i t s`

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