学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.94
所属科目:小学英语
Listen and choose. (根据你听到的内容,圈出括号中正确的单词
(1)I have a (red   blue) pen.
(2)This is a (yellow   black) pencil box.
(3)I have a (white   black) crayon.
(4)This is a (orange   green) ruler.
(5)I have a (green   blue) book.
(6)This is a (black   brown)eraser.
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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

用户名称
2019-09-19

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

用户名称
2019-09-19
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