学进去-教育应平等而普惠
试题
类型:其他计算
难度系数:0.85
所属科目:小学数学
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(1)45+15×6=                                          (2)250÷5×8=
(3)6×5÷2×4=                                        (4)30×3+8=
(5)400÷4+20×5=                                     (6)10+12÷3+20=
(7)(80÷20+80)÷4=                                 (8)70+(100-10×5)=
(9) = (10) =
(11)6.3÷0.07= (12) ×13=
(13)3-1.95= (14) 0÷=
(15) 0.5-= (16)540÷9=
(17) = (18) 0.23+177%=
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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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