若 https://assets.asklib.com/psource/2015102616322952664.jpg =1/4,则幂级数 https://assets.asklib.com/psource/2015102616323051693.jpg 在何处绝对收敛()?
若 https://assets.asklib.com/images/image2/2017051116293027976.jpg ,则级数的收敛半径R为()。
若级数收敛 https://assets.asklib.com/psource/2015103008464784870.jpg ,则下列级数中不收敛的是()。
若=0,则级数收敛。( )http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/90e12c5dfe3a4c59ad61a94245c94f08.png
若级数收敛于,则级数 .58efc6b472d8a68f338049f313dc26e1.png9fb86c2335b64b2fe4032bf957513c07.png2e49bcb2397c80136cd2299badc7a2ee.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
若级数收敛于,则=【 】。6277f114957a1a920e5d8d7504babbee.png3181d811fc2f4f9825be1ed0b3f7c610.png84f03d3c1fffb2ef1ae997cd6492faea.png
幂级数在 上收敛于。 ( )http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/4b41e2410f464a61b9b06ce0712d93b0.png
已知级数 收敛,则 =0。( )http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/a703457bd1c5493097ee263ea5e75e60.png
已知幂级数在处收敛,则级数( )。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/a4c3c734a0fb4f629ac8dce23b72e9ad.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
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
若正项级数 收敛,则级数 ( )。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/678ff26f1a0b4c6f9c771800da131fa2.png
若级数收敛于S,则级数收敛于______
若级数<img src='https://img2.soutiyun.com/latex/latex.action' />与<img src='https://img2.soutiyun.com/latex/latex.action' />分别收敛于S<sub>1</sub>与S<sub>2</sub>,则( )式未必成立.
若函数项级数 收敛,则下列错误的是()
若级数习绝对收敛,则级数习必定();若级数习条件收敛,则级数必定().
若,则幂级数的收敛半径是()。
级数<img src='http://221.174.24.96:6088/latex/latex.action?latex=xhn1bv97bj0xfv57k1xpbmz0ex0oltepxntufvxmcmfjezj9e259' />是否收敛?若收敛,是条件收敛还是绝对收敛?
设有两个级数(Ⅰ)和则下列结论中正确的是().A.若u<sub>n</sub>≤υ<sub>n</sub>,且(II)收敛,则(I)一定收敛B.若u≇
证明:若级数绝对收敛,则函数项级数在R一致收敛.
若幂级数的收敛半径分别是R<sub>1</sub>和R<sub>2</sub>,则R<sub>1</sub>和R<sub>2</sub>的大小关系是()。