A、因<img id=\""ODqpwbwTEMP20180523105942173.png\"" src=\""http:\/\/ccm2cdn.open.com.cn\/zyglpt\/OD\/TEMP\/2018\/0523\/ODqpwbwTEMP20180523105942173.png?Expires=1842404382&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=iEgja%2BWklMpl2nyi1SCemgzL14c%3D\"" \/>,故级数收敛
B、因<img id=\""ODyhoheTEMP20180523105942888.png\"" src=\""http:\/\/ccm2cdn.open.com.cn\/zyglpt\/OD\/TEMP\/2018\/0523\/ODyhoheTEMP20180523105942888.png?Expires=1842404382&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=jjDQQER%2BlmcCdcQbz20wFkJJ26U%3D\"" \/>,故级数收敛
C、因<img id=\""ODskacwTEMP20180523105943209.png\"" src=\""http:\/\/ccm2cdn.open.com.cn\/zyglpt\/OD\/TEMP\/2018\/0523\/ODskacwTEMP20180523105943209.png?Expires=1842404383&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=DHW5Bn6a0TIu36evLmOEZt3whho%3D\"" \/>故级数发散
D、因为<img id=\""ODmdfhoTEMP20180523105943164.png\"" src=\""http:\/\/ccm2cdn.open.com.cn\/zyglpt\/OD\/TEMP\/2018\/0523\/ODmdfhoTEMP20180523105943164.png?Expires=1842404383&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=mT%2BguDoZdeHQ0aGPwhKz8PKhTGY%3D\"" \/>故级数发散