学进去-教育应平等而普惠
试题
类型:看图题
难度系数:0.65
所属科目:小学英语
Read and write.(看图,读一读,写单词)
(1) Look! Here is a __________.   (aritbb)
(2) I have a lovely __________.   (god) 
(3) Look at the dress. It is __________.  (cein)
(4) How many tomatoes? __________.  (elvewt)
(5) This is my shirt. It is too __________.  (malls) 
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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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