函数f(x)=(sinx+cosx)^2-2sin^2x的单调递增区间为?
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![函数f(x)=(sinx+cosx)^2-2sin^2x的单调递增区间为?](/uploads/image/z/3858210-18-0.jpg?t=%E5%87%BD%E6%95%B0f%28x%29%3D%28sinx%2Bcosx%29%5E2-2sin%5E2x%E7%9A%84%E5%8D%95%E8%B0%83%E9%80%92%E5%A2%9E%E5%8C%BA%E9%97%B4%E4%B8%BA%3F)
函数f(x)=(sinx+cosx)^2-2sin^2x的单调递增区间为?
函数f(x)=(sinx+cosx)^2-2sin^2x的单调递增区间为?
函数f(x)=(sinx+cosx)^2-2sin^2x的单调递增区间为?
f=1+sin2x-1+cos2x=sin(2x+pi/4)
增区间为[-3/8pi+npi,1pi/8+npi]