设函数f(x)=sin(wx+φ)+cos(wx+φ)(w>0,|φ|<π/2)的最小正周期为π,且f(-x)=f(x)则 A f(x)在(0,π/2)
单调递减。Bf(x)在(π/4,3π/4)单调递减。Cf(x)在(0,π/2)单调递增。Df(x)在(π/4,3π/4)单调递增...
单调递减。B f(x)在(π/4, 3π/4)单调递减。C f(x)在(0,π/2)单调递增。D f(x)在(π/4,3π/4)单调递增
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