若某稳定的离散时间LTI系统的系统函数[img=153x43]1803d443a426926.png[/img],则系统函数的收敛域为_____。
A: [img=85x25]1803d443adbe9fd.png[/img]
B: [img=52x25]1803d443b5f6e23.png[/img]
C: [img=52x25]1803d443be9748c.png[/img]
D: [img=52x25]1803d443c6e8909.png[/img]
A: [img=85x25]1803d443adbe9fd.png[/img]
B: [img=52x25]1803d443b5f6e23.png[/img]
C: [img=52x25]1803d443be9748c.png[/img]
D: [img=52x25]1803d443c6e8909.png[/img]
举一反三
- 若某稳定的离散时间LTI系统的系统函数[img=153x43]180329827d91fb0.png[/img],则系统函数的收敛域为_____。 A: [img=85x25]1803298286d1d94.png[/img] B: [img=52x25]180329828fb3f84.png[/img] C: [img=52x25]180329829744005.png[/img] D: [img=52x25]180329829f60bcc.png[/img]
- 若某稳定的离散时间LTI系统的系统函数[img=153x43]1803d443a426926.png[/img],则系统函数的收敛域为_____。 未知类型：{'options': ['', '', '', ''], 'type': 102}
- 设随机变量X服从U(-1,1)，则随机变量变量Y=max(X, |X|)服从的分布为（） A: [img=66x25]1803bb15eb83682.png[/img] B: [img=52x25]1803bb15f3b2ab6.png[/img] C: [img=52x25]1803bb15fe31a58.png[/img] D: 非均匀分布
- 考虑二元函数的下面四条性质，则有（ ）(1)f(x,y)在点[img=52x25]1803d3469e57b15.png[/img]处连续 (2)f(x,y)在点[img=52x25]1803d3469e57b15.png[/img]处两个偏导数连续(3)f(x,y)在点[img=52x25]1803d3469e57b15.png[/img]处可微 (4)f(x,y)在点[img=52x25]1803d3469e57b15.png[/img]处两个偏导数存在 A: [img=125x25]1803d346c03fe8a.png[/img] B: [img=125x25]1803d346c8da475.png[/img] C: [img=125x25]1803d346d101a9e.png[/img] D: [img=125x25]1803d346d9681c2.png[/img]
- 考虑二元函数的下面四条性质，则有（ ）(1)f(x,y)在点[img=52x25]1803d33f049b721.png[/img]处连续 (2)f(x,y)在点[img=52x25]1803d33f049b721.png[/img]处两个偏导数连续(3)f(x,y)在点[img=52x25]1803d33f049b721.png[/img]处可微 (4)f(x,y)在点[img=52x25]1803d33f049b721.png[/img]处两个偏导数存在 A: [img=125x25]1803d33f258c65d.png[/img] B: [img=125x25]1803d33f2f5d801.png[/img] C: [img=125x25]1803d33f3820bdb.png[/img] D: [img=125x25]1803d33f40873ef.png[/img]