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![](http://static.xuejinqu.com/qimg/8b2/8b282ddedf3fdb3feb439c2c5e1976b6.png)
![](http://static.xuejinqu.com/qimg/b2a/b2a3cca7bd29f5b75849f72d39f2d59c.png)
![](http://static.xuejinqu.com/qimg/4a9/4a90ba83a364377930905283bfcaeeab.png)
![](http://static.xuejinqu.com/qimg/7a4/7a4323eabf4ca9ef3301bae8c90dd864.png)
—How old are you?
—I'm six.________
—How old are you?
—I'm eight.________
—How old are you?
—I'm seven.________
—How old are you?
—I'm five.________
![](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)