学进去-教育应平等而普惠
试题
类型:填空题
难度系数:0.65
所属科目:小学英语
请用所给单词的正确形式填空。
1. I _________ (have) an exciting party last weekend.
2. _________ she _________ (practice) her guitar yesterday? No, she _________.
3. --What ________ Tom often ________ (do) on Saturday evening?
--He ________ (watch) TV and __________ (read) an interesting book.
4. They all _________ (go) to the mountains yesterday morning.
5. When ______ you ________ (write) this song? I __________ (write) it last year.
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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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