级数http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/524d1d57360948748b8433c22f9c14b7.png是（ ）
举一反三
- 级数http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/e85b0dcd96b943c9a9da6bc398731f88.png（ ）
- 若级数http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/e3aed89d4b864614815b126628d94b34.png收敛，则http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/e2642043e7144a61a807e2a050ccd6a9.png也收敛。( )<br>
- 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>
- 设http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/5f9f81d9a1184c2eb383cb81ebbe2768.png，若http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/410a0d9f8b4a4f82a6818a45f4a3b450.png，http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/637f75734cb849caa773da5377f55f5e.png，http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/29aefd40f6c54e788587a2115dd02467.png，则http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/631634fcf7854ec88eedede14de7c1de.png之间的大小顺序为（ ）<br>
- 若级数http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/8905974d3ec04f3285b62c18114467c3.png收敛，则http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/221e7836b56b4f99b50bc3016b80400d.png收敛。（ ）<br>