一班 | 二班 | 三班 | 四班 | |
种松树棵树 | 25 | (△) | 50 | 23 |
种柏树棵树 | 31 | 40 | ( □) | 4 |
种杨树棵树 | 41 | 19 | 9 | (○) |
一共 | ( ☆) | 72 | 75 | 69 |
1.☆=
2.( )种的最多。
A.一班 | B.二班 | C.三班 | D.四班 |
A.一班 | B.二班 | C.三班 | D.四班 |
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