函数y=sinx-sin|x|的值域是？

---

x>=0
y=sinx-sinx=0

x<0
y=sinx-sin(-x)
=sinx+sinx
=2sinx
则-2<绝模=sin2x<薯谈=2

所数宏碰以值域[-2,2]

---

x>=0时
y=sinx -sinx =0
x<0时厅烂
y=sinx -sin(-x)=2sinx

所以 -2<=y<=2

所以值乱伏模哗缓域是[-2,2]

---