举一反三
- 已知幂级数在处发散，则时，幂级数( )。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/5754dc1be0d14442a3a1aab9a8d11025.png
- 已知幂级数 在 处收敛，则 时，幂级数 绝对收敛。（ ）http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/75f888305cee4551b37bf60fcef978b1.png
- 已知幂级数在处收敛，则时，幂级数一定收敛。（ ）http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/be98218ea9234292a97cab946c428bb8.png
- 若级数发散，则级数++…++…发散。（ ）http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/a95be4d04b8540a2a3d2a382ef950324.png
- 若幂级数在处收敛，则幂级数在处（ ）。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/e1b9a44af3c247c18ecbd519ab4e38fc.png
内容
- 0
若 =∞，则级数 收敛于 。（ ）http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/32fb85dd066a437a87922b798361205f.png
- 1
若=∞，则级数收敛于。（ ）http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/32fb85dd066a437a87922b798361205f.png
- 2
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>
- 3
将=展开为（的幂级数，并指出收敛范围 ( )。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/fd6586b3576f490385cbac9dfd8a1dca.png
- 4
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>