A、级数<img id=\""ODfwwtiTEMP20180523110851266.png\"" src=\""http:\/\/ccm2cdn.open.com.cn\/zyglpt\/OD\/TEMP\/2018\/0523\/ODfwwtiTEMP20180523110851266.png?Expires=1842404931&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=IjSNpM\/GhkcQDo1usPbKnVD8awM%3D\"" \/>收敛
B、<img id=\""ODpcdjiTEMP20180523110851622.png\"" src=\""http:\/\/ccm2cdn.open.com.cn\/zyglpt\/OD\/TEMP\/2018\/0523\/ODpcdjiTEMP20180523110851622.png?Expires=1842404931&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=9\/ZRI8GIo9%2Bn9pr2KHp2x5i7cPY%3D\"" \/>
C、<img id=\""ODznaaiTEMP20180523110852292.png\"" src=\""http:\/\/ccm2cdn.open.com.cn\/zyglpt\/OD\/TEMP\/2018\/0523\/ODznaaiTEMP20180523110852292.png?Expires=1842404932&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=p1o2f6smjQ9If0IvoE5CuSXOHkA%3D\"" \/>且<img id=\""ODtqxekTEMP20180523110852228.png\"" src=\""http:\/\/ccm2cdn.open.com.cn\/zyglpt\/OD\/TEMP\/2018\/0523\/ODtqxekTEMP20180523110852228.png?Expires=1842404932&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=3jNsWh67UfBY6fwbThrJ%2BeSluxk%3D\"" \/>
D、级数<img id=\""ODnsupyTEMP20180523110852546.png\"" src=\""http:\/\/ccm2cdn.open.com.cn\/zyglpt\/OD\/TEMP\/2018\/0523\/ODnsupyTEMP20180523110852546.png?Expires=1842404933&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=xDoCEYmF1%2BmH6IWMi3bJ7VWQUG8%3D\"" \/>收敛