学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.40
所属科目:高中信息技术
有如下VB程序段:
For i = 1 To 2
k = i
For j = i + 1 To 7
If a(j) < a(k) Then k = j
Next j
If i <> k Then
t = a(i) : a(i) = a(k) : a(k) = t 
End If
Next i
数组元素a(1)到a(7)的值依次为“19,85,86,90,24,22,62”,经过该程序段“加工”后,数组元素a(1)到a(7)的值依次为(    )
A.19,22,24,62,85,86,90B.19,22,86,90,24,85,62
C.90,86,85,19,24,22,62D.90,86,85,62,24,22,19
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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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