若级数发散，则级数++…++…发散。（ ）http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/a95be4d04b8540a2a3d2a382ef950324.png
举一反三
- 若级数http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/7b1a57e50e28470a94cfc69798ff4e92.png发散，则级数http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/8dfdfcf264264745ae2e15830d060573.png（http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/150299b5282a4ae9a7a91a19839d4460.png为常数） 也发散。( )<span style="font-family: 宋体;</span><br><br>
- 若 =∞，则级数 收敛于 。（ ）http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/32fb85dd066a437a87922b798361205f.png
- 若=∞，则级数收敛于。（ ）http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/32fb85dd066a437a87922b798361205f.png
- 若级数与都发散，则https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/be817f06362e4541a985431b4d3706f5.png
- 已知幂级数 在 处发散，则 时，幂级数 ( )。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/5754dc1be0d14442a3a1aab9a8d11025.png