A.-12.5%;-3.28%
B.-10.2%;-5.3%
C.-6.8%;-1.2%
D.-4.9%;-0.8%
如果方程lg2x+(lg2+lg3)1g x+lg2×193=0的两个根分别是x1,x2,那么x1·x2=()
A.lg2×lg3
B.lg2+lg3
C.1/6
D.-6
A.15%vs20%
B.15%vs10%
C.5%vs10%
D.15%vs30%
A.72;108
B.90;90
C.120;60
D.60;120
问:(1) 该投资者的股票组合的β系数是多少?
(2) 该投资者应卖出多少份期货合约进行套期保值?
(3) 该投资者套期保值的结果如何?
Private x As Integer
Private Sub Command1_Click()
x = 5: y = 3
Call Proc(x, y)
Label
1.Caption = x
Label
2.Caption = y
End Sub
Private Sub Proc(ByVal a As Integer, ByVal b
As Integer)
x = a * a
y = b + b
End Sub
运行程序后, 则两个标签中显示的内容分别是
A.5和3
B.25和3
C.25和6
D.5和6
A.胎儿头占身长1/3,婴儿占1/4,成人占1/5
B.胎儿头占身长1/2,婴儿占1/3,成人占1/5
C.胎儿头占身长1/4,婴儿占1/5,成人1/6
D.胎儿头占身长1/2,婴儿占1/4,成人占1/8
己知数列的通项公式为an=n(n+2),问48和105是不是这个数列中的项,如果是,分别是第几项?