学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.65
所属科目:小学英语
选出不同类的单词。
(____) 1. A. pig             B. dog             C. nose             D. sheep
(____) 2. A. orange         B. apple         C. lemon             D. see
(____) 3. A. hear             B. see             C. draw             D. paper
(____) 4. A. oink             B. quack         C. cluck             D. chick
(____) 5. A. nose             B. eye         C. ear                 D. pen
(____) 6. A. zoo             B. farm         C. pig                 D. park
(____) 7. A. egg             B. cow             C. chick             D. hen
(____) 8. A. pen             B. pencil         C. paper             D. ground
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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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