学进去-教育应平等而普惠
试题
类型:填空题
难度系数:0.85
所属科目:小学数学
数学乐园.
(1)画△,比□多2个                                     (2)画○比☆少3个
□ □ □ □                                        ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆
_____________________                                     _______________________
(3)画○和△同样多                                 (4)画☆比○多2个
△ △ △ △                                                       ○ ○ ○ ○
______________________                                     ____________________
(5)按规律画一画
△▲▲△                                             ●●○●●○●●
___________                                          _________________
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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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