A、级数<img id=\""ODkcpjrTEMP20180523105803917.png\"" src=\""http:\/\/ccm2cdn.open.com.cn\/zyglpt\/OD\/TEMP\/2018\/0523\/ODkcpjrTEMP20180523105803917.png?Expires=1842404283&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=jeE7gImCCP9IG8I1fyLqxi3oYP8%3D\"" \/>收敛
B、<img id=\""ODzevjaTEMP20180523105804221.png\"" src=\""http:\/\/ccm2cdn.open.com.cn\/zyglpt\/OD\/TEMP\/2018\/0523\/ODzevjaTEMP20180523105804221.png?Expires=1842404284&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=oDRg424Ixh5p3vubcaAf9maE4Xw%3D\"" \/>
C、<img id=\""ODvvxbhTEMP20180523105804513.png\"" src=\""http:\/\/ccm2cdn.open.com.cn\/zyglpt\/OD\/TEMP\/2018\/0523\/ODvvxbhTEMP20180523105804513.png?Expires=1842404284&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=sAS4d53G7brQMSSRDfOV9XK9NXU%3D\"" \/>且<img id=\""ODklnouTEMP20180523105804832.png\"" src=\""http:\/\/ccm2cdn.open.com.cn\/zyglpt\/OD\/TEMP\/2018\/0523\/ODklnouTEMP20180523105804832.png?Expires=1842404284&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=P5hox1Q3ijs3kRZwiF8NlJppWb0%3D\"" \/>
D、级数<img id=\""ODkxgaaTEMP20180523105804788.png\"" src=\""http:\/\/ccm2cdn.open.com.cn\/zyglpt\/OD\/TEMP\/2018\/0523\/ODkxgaaTEMP20180523105804788.png?Expires=1842404285&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=2xfFEMsNIGeyQ139AltrerO\/\/cE%3D\"" \/>收敛