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![](http://static.xuejinqu.com/qimg/d19/d19fc3aef1c7a54458b1562999fd6972.png)
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请回答下列问题:
(1)厂商宣称开发出防护率
![](http://static.xuejinqu.com/qimg/34c/34c325436213d08302d51bcf96666b1f.png)
![](http://static.xuejinqu.com/qimg/099/0998bf559eeff6ed85371c217df6fa49.png)
(2)某防晒产品文宣内容如图所示.
![](http://static.xuejinqu.com/qimg/551/5514a2d1b9b2bf2775f5174257547bfd.png)
请根据
![](http://static.xuejinqu.com/qimg/099/0998bf559eeff6ed85371c217df6fa49.png)
![](http://static.xuejinqu.com/images/y-prise.png)
同类型试题
![](http://static.xuejinqu.com/images/medal.png)
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
![](http://static.xuejinqu.com/images/avatar.png)
![](http://static.xuejinqu.com/images/avatar.png)
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
![](http://static.xuejinqu.com/images/avatar.png)
![](http://static.xuejinqu.com/images/avatar.png)