下列函数中,在点<img src=https://huaweicloudobs.ahjxjy.cn/3DC0FA53F615AEF610AD91B9AA22C255.png title=F79FXO[$F7R_`Q8SLN$IV5T.png alt=F79FXO[$F7R_`Q8SLN$IV5T.png/>处连续的函数是( )
①
<img src=https://huaweicloudobs.ahjxjy.cn/8A77645B7A618A607E5D92147A6470DF.png title=WH$5BYT$`@A8MQ`$X3IY]HP.png alt=WH$5BYT$`@A8MQ`$X3IY]HP.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/F362838961F7A16F6DA592A44056E778.png title=H936{2R3}_A5N[C17S)0G$T.png alt=H936{2R3}_A5N[C17S)0G$T.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/B31DB6C86AF6596E634623E53E0E46A0.png title=_EURZ`ZFUS6Q5AU`1SGG]YV.png alt=_EURZ`ZFUS6Q5AU`1SGG]YV.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/F85FD73CE65CFD3D0533CC2E5E5D6AEE.png title=]S7%D$5R{[FHFA$PVVO))EV.png alt=]S7%D$5R{[FHFA$PVVO))EV.png/>