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Let f(x)= |{:(2cos^2x,sin2x,-sinx),(sin2...

Let `f(x)= |{:(2cos^2x,sin2x,-sinx),(sin2x,2sin^2x,cosx),(sinx,-cosx,0):}| ,"then find " 1/piint_0^(pi/2)[f(x)+f'(x)]dx.`

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