设函数f（x）对任意x均满足等式f（1+x）=af（x），且有f′（0）=b，其中a，b为非零常数，则（　　）<br>·<img src="/lqwvjeImg/8f/8fd9d461bb6ddb94d5603719158039f4.png" >在<img src="/lqwvjeImg/b3/b3b32849823e6e7cc1701201fb0a9f75.png" >处不可导;<br>·<img src="/lqwvjeImg/8f/8fd9d461bb6ddb94d5603719158039f4.png" >在<img src="/lqwvjeImg/b3/b3b32849823e6e7cc1701201fb0a9f75.png" >处可导,且<img src="/lqwvjeImg/ff/fff16de4b6ed27dfdbca965bb8af4944.png" >;<br>·<img src="/lqwvjeImg/8f/8fd9d461bb6ddb94d5603719158039f4.png" >在<img src="/lqwvjeImg/b3/b3b32849823e6e7cc1701201fb0a9f75.png" >处可导,且<img src="/lqwvjeImg/5f/5f93c4311ea82f1bd62ccfa9fe426747.png" >;<br>·<img src="/lqwvjeImg/8f/8fd9d461bb6ddb94d5603719158039f4.png" >在<img src="/lqwvjeImg/b3/b3b32849823e6e7cc1701201fb0a9f75.png" >处可导,且<img src="/lqwvjeImg/29/293f9595b7bbc39c3d3e64042a19ea58.png" >。