学进去-教育应平等而普惠
试题
类型:连线题
难度系数:0.94
所属科目:小学英语
Match the present and past tense forms of the verbs.找出下列动词的过去式,并连线。
1.see                       saw                       6.play                      was
2.look                      met                         7.is                         played
3.meet                    went                       8.take                       put
4.go                       made                       9.put                       stopped
5.make                  looked                      10.stop                       took
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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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