1. ■ ■ △ △ ◎ ■ ■ △ △ ◎( );
2. ★ ★ ¤ ¤ ¤ △ ★ ★ ¤¤ ¤ △( );
3. ★ ◇ ◎ ★ ◇ ◎ ★ ◇ ◎ ★ ◇ ◎( );
4. ¤ ■ △ ¤ ■ △( )¤ ■ △ ¤ ■ △
5. 认真观察上面的图形,正确的填写下面的表格。
图形 | ■ | △ | ◎ | ¤ | ★ | ◇ |
个数(个) | | | | | | |
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