若极限,则函数处( )
·可导,且·不一定可导,但·不一定可导,但·不一定可导,但<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/14830912651015e88f2237fbf479db8a62a0ce970d636image84.png" .
出自:佳木斯大学语言治疗学