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
Read and choose(选出在意义上不属于同一类的单词):
(______)1. A. bowl                   B. blue                   C. plate
(______)2. A. spoon                   B. room                  C. chopsticks
(______)3. A. is                       B. are                   C. can
(______)4. A. one                      B. ten                   C. on
(______)5. A. it                       B. in                   C. under
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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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