线性系统的输入信号为Xi(t)=sinωt,则其输出信号响应频率为()。

线性系统的输入信号为Xi(t)=sinωt,则其输出信号响应频率为()。


相关考题:

下面程序段的运行结果是【 】。Option Base 1Private Sub swap(a()As InteSer)For I=1 to 10\2t=a(i)a(i)=a(10-1+1)a(10-1+1)=tNext1End SubPrivate Sub Form_Click()Dim x(10)As IntegerFor I=1 to 10x(i)=I*2Next1Swap x()For1=1 to 10Print x (i)Next IEnd Sub

窗体上有名称分别为Text1、Text2的2个文本框,要求文卒框Text1中输入的数据小于500,文本框Text2中输入的数据小于1000,否则重新输入。为了实现上述功能,在以下程序中问号(?)处应填入的内容是______。 Private Sub Text1 LostFocus() Call CheckInput(Text1,500) End Sub Private Sub Text2 LostFocus() Call CheCkInput(Text2,1000) End Sub Sub CheckInput(t AS ?,x As Integer) If Val(t.Text)>X Then MsgBox "请重新输入!" End If End SubA.TextB.SelTextC.ControlD.Form

请选出以下程序的输出结果#includestdio.hmain(){ int a[]={1,2,3,4},i;int x=0;for(i=0;i4;i++){ sub(a,x);printf("%d",x);}printf("\n");}sub(s,y)int *s,y;{ static int t=3;y=s[t];t--; }A.1 2 3 4B.4 3 2 1C.0 0 0 0D.4 4 4 4

(12)有下列Sub过程: Sub Sub(x As Single,y As Single) t=x x=t/y y=t Mody End Sub 在窗体上的命令按钮Commandl中,编写下列事件过程,执行该事件过程调用Sun过程,结果是( )。 Private Sub Commandl_Click() Dim a As Single Dim b As Single a=5 b=4 Sun a,b Print a;b End Sub A.1.25 1 B.5 4 C.4 5 D.1 1.25

有如下SUB过程:Sub s(x As Single,y As Single)t=xx=t / yy=t Mod yEnd Sub在窗体上添加一个命令按钮,然后编写如下事件过程:Private Sub Form_Click()Dim a As SingleDim b As Singlea=5b=4s a,bPrint a,bEnd Sub则程序运行后,单击命令按钮,输出的结果为【 】 。

下面程序段的运行结果是【 】。Option Base 1Private Sub Swap (a() As IntegFor I=1 to 10\2t=a(I)a(I)=a(10-I+1)a(10-I+1)=tNext IEnd SubPrivate Sub Form_Click()Dim x(10) As IntegerFor I=1 to 10x(I)=I*2Next ISwap x()For I=1 to 10Print x(I)Next IEnd Sub

有如下事件过程:Private Sub Form. Active ( )Dim Score (1 to 3) As IntegerDim i As IntegerDim t As VariantFori=3 To 1 step-1Score (i) = 2 * iNextFor Each t In ScorePrint tNextEnd Sub程序运行后窗体上显示的值为【 】。

有如下程序: Private Sub Command1_Click() Dim a As Single Dim b As Single a=5:b=4 Call Sub1(a,b) End Sub Sub Sub1(x As Single,y As Single) t=X X=t\Y Y=t Mod y End Sub 在调用运行上述程序后,a和b的值分别为A.0 0B. 1 1C.2 2D.1 2

现有如下程序: Private Sub Command1_Click() s=0 For i=1 To 5 s=s+f(5+i) Next Print s End Sub Public Function f(x As Integer) If x>=10 Then t=x+1 Else t=x+2 End If f=t End Function 运行程序,则窗体上显示的是( )。A.38B.49C.61D.70

下面程序段,运行后的结果是 Private Sub Commandl_Click( ) Dim b%(1 To 4),i%,t# For i=1 To 4 b(i)=i Next i t=Tof(b( ) ) Print"t=";t, End Sub Function Tof(a() As Integer) Dim t#,i% t=1 For i=2 To UBound(A)t=t * a(i) Next i Tof=t End FunctionA.t=18B.t=24C.t=30D.t=32

请选出以下程序的输出结果includemain(){ int a[]={1,2,3,4},i;int x=0;for(i=0;i 请选出以下程序的输出结果 #include<stdio.h> main() { int a[]={1,2,3,4},i; int x=0; for(i=0;i<4;i++) { sub(a,x);printf("%d",x);} printf("\n");} sub(s,y) int*s,y; { static int t=3; y=s[t];t--; }A.1 2 3 4B.4 3 2 1C.0D.4444

有如下程序: Private Sub Commandl_Click() Dim a As Single Dim b As Single a=2:b=4 Call CS(a,b)End Sub Sub CS(x As Single,y As Single) t=X x=t\y y=t Mod y End Sub 程序运行后,单击命令按钮,a和b的值分别为A.0 0B.1 1C.0 2D.1 2

假定有如下的Sub过程: Sub Func(x As Single, y As Single) t=x x=t/y y=t Mod y End Sub 在窗体上画一个命令按钮,然后编写如下事件过程: Private Sub Command1_Click() Dim a As Single Dim b As Single a=6 b=5 Func(a, B) Print a, b End Sub 程序运行后,单击命令按钮,输出结果为 ______。A.6 5B.1 1C.1.2 5D.1.2 1

假定有如下的Sub过程: Sub S(x As Single,y As Single) t=x x=t/y y=t Mod y End Sub 在窗体上画一个命令按钮,然后编写如下事件过程: Private Sub Command1_Click() Dim a As Single Dim b As Single a=5 b=2 S a,b print a,b End Sub 程序运行后,单击命令按钮,输出结果是( )。A.5 2B.1 1C.1.25 4D.2.5 1

下面程序段,运行后的结果是 Private Sub Command1_Click() Dim b%(1 To 4),i%,t# For i=1 To 4 b(i) =i Next t=Tof(b() ) Print"t=";t, End Sub Function Tof(a() As Integer) Dim t#,i% t=1 For i=2 To UBound(a) t=t*a(i) Next Tof=t End FunctionA.t=18B.t=24C.t=30D.t=32

假定有如下的Sub过程:Sub Sub1(x As Single,y As single)t=xx=t/yy=t Mod yEnd Sub在窗体上画一个命令按钮,然后编写如下事件过程:Private Sub Command1_click()Dim a As SingleDim b As Singlea=5b=4Sub1 a,bPrint a;bEnd Sub程序运行后,单击命令按钮,输出结果为A.B.C.D.

假定有如下的Sub过程:Sub Sub1(x As Single, y As single)t=xx=t / yy=t Mod yEnd Sub在窗体上画一个命令按钮,然后编写如下事件过程:Private Sub Command1_Click()Dim a As SingleDim b As Singlea=5b=4Sub1 a,bPrint a;bEnd Sub程序运行后,单击命令按钮,输出结果为A.54B.] 1]]1C.] 1.2]]5.4D.] 1.25]]1

有如下程序。 Private Sub Commandl_Click() Dim a As Single Dim b As Single a=5:b=4 Call Sub1 ( a,B)End Sub Sub Subl(x As Single, y As Single) t=x x=t\y y = t Mod y End Sub 在调用运行上述程序后,a和b的值分别为A.0 0B.1 1C.2D.1 2

窗体有命令按钮Commandl和文本框Text1,对应的事件代码如下:Private Sub Commandl Click( ) For i=1T04X==3 For i=1t03 For k=1T02 x=x+3 Next k Next j Next i Text1.Value=Str(x) End Sub 运行以上事件过程,文本框中的输出是( )。A.6B.12C.18D.21

有如下事件过程,单击命令按钮扣,输出结果是 Private Sub Command1 Click( ) Dim b% (1 To4) ,j%, t# For j=1 To 4 b(j) =j Next j t=Tax(b( ) ) Print "t="; t, End Sub Function Tax (a( ) As Integer) Dim t#, i% t=1 For i=2 To UBound (A)t=t * a(i) Next i Tax=t End FunctionA.t=18B.t=24C.t=30D.t=32

假定有如下的Sub过程:Sub Sub1 (x As Single, y As Single) t=x x = t/y y = t Mod yEnd Sub 在窗体上画一个命令按钮,然后编写如下事件过程:Private Sub Command1_ Click() Dim a As Single Dim b As Single a = 5 b = 4 Sub1 a, b Print a; b End Sub 程序运行后,单击命令按钮,输出结果为______。A.5 4B.1 1C.1.2 5.4D.1.25 1

设有下列程序 Private Sub Form. Click( ) X=50 For i=1 T0 4 y=InputBox("请输入一个整数") y=Val(v) If y Mod 5=0 Then a=a+y x=y Else a=a+x End If Next i Print a End Sub 程序运行后,单击窗体,在输入对话框中依次输入15、24、35、46,输出结果为( )。A.100B.50C.120D.70

请选出以下程序的输出结果_______。 includesub(int*s,inty){ static int t=3,y=s[t];t 请选出以下程序的输出结果_______。 #include<stdio.h> sub(int*s,inty) { static int t=3, y=s[t];t-; } main() { int a[]={1,2,3,4},i,x=0; for(i=0;i<4;i++){ sub(a,x);printf("%d",x);} printf("\n"); }A.1234B.4321C.0D.4444

窗体有命令按钮Commandl和文本框Text1,对应的事件代码如下:Private Sub Commandl Click( )For i=1T04X==3For i=1t03For k=1T02x=x+3Next kNext jNext iText1.Value=Str(x)End Sub运行以上事件过程,文本框中的输出是( )。A.6B.12C.18D.21

请选出以下程序的输出结果()。includesub(int *s,int y){static int t=3; y=s[t];t--;} 请选出以下程序的输出结果( )。 #include <stdio.h> sub(int *s,int y) { static int t=3; y=s[t];t--; } main() { int a[]={1,2,3,4},i,x=0; for(i=0;i<4;i++) { sub(a,x);printf("%d",x); } printf("\n"); }A.1234B.4321C.0D.4444

以下能够正确计算n!的程序是( )。A.Private Sub Commandl_C1ick()B.hiVate Sub Commandl_C1ick() n=5:x=1 n=5:x=1:i=1 DO DO X=x*1 X=X*1 i=i+1 i=i+1 Loop while i<n Loop While<n Print x Ptinte x End Sub End SubC.Private Sub Commandl_Click ()D.Pdvate Sub Commandl C1ick() n=5:X=1:i=1 n=5=:x=1:i=1 DO DO X=X*1 X=X*1 i=i+1 i=i+1 Loop While i>n Print x Print x End Sub End Sub

填空题线性系统的输入信号为Xi(t)=sinωt,则其输出信号响应频率为()。