(1)根据上图照样子填写下表.
| 欢欢 | 乐乐 | 多多 |
A | (4,14) | | |
B | | (3,5) | |
C | | | |
D | | | |
E | | | |
F | | | |
G | | | |
(2)观察表格,你发现了什么规律?
(3)根据上面发现的规律,判断下面哪组数对表示蜡烛轮廓的点连接起来最像欢欢画的蜡烛.
①A(2,7) B(1.5,5) C(1,5) D(1,0)
E(3,0) F(3,5) G(2.5,5)
②A(4,28) B(3,20) C(2,20) D(2,0)
E(6,0) F(6,20) G(5,20)
同类型试题
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
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