学进去-教育应平等而普惠
试题
类型:填空题
难度系数:0.64
所属科目:小学英语
根据示例写出单词或短语的正确形式。
例:long—longer                 watch TV—watched TV
(1) strong—                     (6)play football—
(2) big—                        (7)read books—
(3) nice—                       (8)go hiking—
(4) thin—                       (9)take pictures—
(5) happy—                      (10)buy presents—
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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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