利用命题“若的收敛半径为R<sub>1</sub>,的收敛半径为R<sub>2</sub>,并且R<sub>1</sub>≠R<sub>2</sub>,则的收敛半径为R=min{R

利用命题“若<img src='https://img2.soutiyun.com/ask/2021-01-20/979980914313406.png' />的收敛半径为R<sub>1</sub>,<img src='https://img2.soutiyun.com/ask/2021-01-20/979980936623682.png' />的收敛半径为R<sub>2</sub>,并且R<sub>1</sub>≠R<sub>2</sub>,则<img src='https://img2.soutiyun.com/ask/2021-01-20/979980968483504.png' />的收敛半径为R=min{R<sub>1</sub>,R<sub>2</sub>},并且当|x|<R时, <img src='https://img2.soutiyun.com/ask/2021-01-20/979981120012171.png' /> 求下列级数的收敛半径、收敛区间和收敛域: <img src='https://img2.soutiyun.com/ask/2021-01-20/979981142352448.png' />

时间:2023-10-03 12:20:00

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