A.—What is it? —It's a hamburger. It's nice. |
B.—What is it? —It's a cake. It's nice. |
C.—What is it? —It's a pizza. It's nice. |
D.—What is it? |
![](http://static.xuejinqu.com/qimg/079/079f186299f77afbd30df5d243c52278.png)
![](http://static.xuejinqu.com/qimg/a09/a09b69940f9abcfb33768fb3107aca7f.png)
![](http://static.xuejinqu.com/qimg/e58/e58c3a3f9f0d8a331cd6466a803bc69a.png)
![](http://static.xuejinqu.com/qimg/d84/d84f17bd21f750e8a1d3b5ab928c5682.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)