试求如图2-8-1(e)所示系统的输出z变换[tex=2.0x1.357]XE+SDQSY28NTqzYsjeii4w==[/tex].[img=534x192]1797456ed942b1e.png[/img]
解 (e)根据结构图2-8-1(e)得[tex=20.5x1.357]iDkg9mCaAzP5hXZbTcbJVVYM/5oPnbM9qpSGwUqL9D6bXUPVuWmtE6gbwE9BmM/WeZpvsm8vHu6NW41wbdqpsUBnApStTTtUFGuBNwPVsA8=[/tex]则[tex=13.714x2.714]rRzrsEddUKGRDh06aqWPR33dhAqDjwnSxknRnco0QdwyhVA+BHJ4ArU64LCpSBgyIqWdLJ+XkzZz8tN15HlWVLfX4c6h0fTqQDx4arsDafg=[/tex]
举一反三
- 试求如图2-8-1(a)所示系统的输出z变换[tex=2.0x1.357]XE+SDQSY28NTqzYsjeii4w==[/tex].[img=440x196]179743e958ef682.png[/img]
- 试求如图2-8-1(d)所示系统的输出z变换[tex=2.0x1.357]XE+SDQSY28NTqzYsjeii4w==[/tex].[img=540x206]17979bb69703b5c.png[/img]
- 试求如图2-8-1(c)所示系统的输出z变换[tex=2.0x1.357]XE+SDQSY28NTqzYsjeii4w==[/tex].[img=448x168]179744d767d1b82.png[/img]
- 试求如图2-8-1(b)所示系统的输出[tex=0.5x0.786]QjholeuuB2uvquRe6w/kgQ==[/tex]变换[tex=2.0x1.357]XE+SDQSY28NTqzYsjeii4w==[/tex][img=414x174]17974486ce66692.png[/img]
- 设随机变量X的密度函数为[img=572x74]1791bc8f97085d2.jpg[/img]试求:(1)常数A;(2)[tex=6.714x1.357]AyFmD19eLybEpNdIrC346g==[/tex]
内容
- 0
已知电路如图11-5 所示。试求输出电压[tex=2.143x1.0]q89d98NxwJ0VLQJzW8qVdBryostwAFHt/SQyGlhcfEs=[/tex][img=566x364]179a2f3be066094.png[/img]
- 1
求不定积分[img=112x35]17da6538063a9e4.png[/img]; ( ) A: (x^4*log(x)^2)/4 + (x^4*(log(x) - 1/4))/ B: (x^4*log(x)^2)/4 - (x^4*(log(x) - 1/4))/8 C: (x^4*log(x)^2)/4 - (x^4*(log(x) - 1/4)) D: (x^4*log(x)^2)/4 + (x^4*(log(x) - 1/4))/8
- 2
试求如图 5.7所示电路的输出电压[tex=0.929x1.0]aU2z7XI+wLpAUTbUnCYc1Q==[/tex]的表达式[img=601x533]179971c5065e1d6.png[/img]
- 3
求图1(a )所示环节的Z变换、图1(b)所示输出的Z变换。(T是采样周期)[img=300x178]17e0cbb8e743053.jpg[/img]图1
- 4
电路如图 5.11所示 ,试求输出电压[tex=0.929x1.0]aU2z7XI+wLpAUTbUnCYc1Q==[/tex]的大小。[img=463x269]1799726a20b6599.png[/img][img=489x308]1799726d8e11931.png[/img]