已知方程在x=2附近有根，下列迭代格式中在不收敛的是( )http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/01b83b16e86c4c37a380de39ddc4d5e7.jpg
举一反三
- 若x*是方程f(x)=0的根，则其迭代格式收敛的条件是（ ）http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/106a745951fc4420bf5f2f8149dd30b0.jpg
- 用牛顿迭代法求方程在x0=1附近的根，第一次迭代值x1= ( )http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/a9bfee6df2804bdabf50248615564305.jpg
- 已知系统的差分方程为：<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/4d2011df82b5487b90c89c82392b7635.png" />初始状态<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/69fdc69872fc4526b3406d4e545b5423.png" />输入信号为<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/75e7d55edcb246e396b63e810f4b0c5f.png" />求系统的零输入响应。 A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/f3d4c0dc2e044821ad7f2fa06ae922de.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/5b82c0acece14a83ad58bc9d533a1885.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/06178caff4d54505b3a9dbfcd3f413ea.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/0b7c106121734430927a095f909fe51f.png" />
- LTI离散系统的差分方程为<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/eb2e05fecafa414e98c3ffaf0b435e82.png" />，当激励<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/f6bdc410c9fd42b8b8dd675197919ceb.png" />时，求零状态响应<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/12bfebbed6b14e298e09c4cb1940677b.png" /> A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/69fc6db7834143a292ce24d4829a06e6.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/f7af4326d64c44669cd0f0d4c7b23eb1.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/f929cab698bd4309a4649201e7f5604c.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/81108c43b5f2457291e3723cc96280e1.png" />
- <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/2205d9f03e724a04b34f2f1045309079.png" />的幅频响应是，幅频响应是。 A: 1，<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/760d7fcc2f264ed1b10fb836cb48f565.png" /> B: -1，<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/21f685d2962e4b6993bfcaa513bdbf68.png" /> C: 2，<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/57267e995f86426899ce3cc0177a2343.png" /> D: 1，<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/ea8ba62853a94a15a5620c5165e3594a.png" />