y=sinx+sin(π/2-x),已知x属于[0,π],求单调递增区间Y=根号2sin(x+π/4),x属于[0,π],x+π/4属于[π/4+5π/4]是一个递减区间啊.没有递增?
y=sinx+sin(π/2-x)=sinx+cosx=根号2sin(x+π/4)单调递增 0