若某连续时间LTI系统的冲激响应[img=160x25]1802d50225d9942.png[/img],则该系统的单位阶跃响应[img=30x25]1802d5022ede5a0.png[/img]为( )
A: [img=111x25]1802d5023739d81.png[/img]
B: [img=110x25]1802d5023f63b2c.png[/img]
C: [img=132x25]1802d5024837c2a.png[/img]
D: [img=195x25]1802d50251241dc.png[/img]
A: [img=111x25]1802d5023739d81.png[/img]
B: [img=110x25]1802d5023f63b2c.png[/img]
C: [img=132x25]1802d5024837c2a.png[/img]
D: [img=195x25]1802d50251241dc.png[/img]
举一反三
- 若某连续时间LTI系统的冲激响应[img=160x25]1803e2c4435adb7.png[/img],则该系统的单位阶跃响应[img=30x25]1803e2c44cbd79a.png[/img]为( ) A: [img=111x25]1803e2c455ebf73.png[/img] B: [img=110x25]1803e2c45db4f40.png[/img] C: [img=132x25]1803e2c466a6aeb.png[/img] D: [img=195x25]1803e2c46f63dff.png[/img]
- 若某连续时间LTI系统的冲激响应[img=160x25]1802d4fde913467.png[/img],则该系统的单位阶跃响应[img=30x25]1802d4fdf1568a8.png[/img]为( ) A: [img=111x25]1802d4fdfb565f0.png[/img] B: [img=110x25]1802d4fe03af98c.png[/img] C: [img=132x25]1802d4fe0c71a10.png[/img] D: [img=195x25]1802d4fe157eb27.png[/img]
- 随机变量 X 服从均匀分布[img=296x96]17de89393460b92.png[/img]则D(X)=( ). A: 4.5 B: 25/12 C: 1/5 D: 1
- 求不定积分[img=121x54]17da653839aa6ae.png[/img]; ( ) A: log(x^2 + 3*x + 25/4)/4 + (5*atan(x/2 + 3/4))/4 B: log(x^2 + 3*x + 25/4)/4 C: (5*atan(x/2 + 3/4))/4 D: log(x^2 + 3*x + 25/4)/4 - (5*atan(x/2 + 3/4))/4
- D(X)=25,D(Y)=36,[img=58x17]17e0c5b1a8ccbe4.jpg[/img],则D(X+Y)=(),D(X-Y)=()