Tính giới hạn![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/2019202287546176166/obj2019202287546176166891556_images/obj2019202287546176166891556_img1.png)
![img2](https://cungthi.online/upload/questionbank3_20201220/eduquestion/2019202287546176166/obj2019202287546176166891556_images/obj2019202287546176166891556_img2.png)
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/2019202287546176166/obj2019202287546176166891556_images/obj2019202287546176166891556_img1.png)
![img2](https://cungthi.online/upload/questionbank3_20201220/eduquestion/2019202287546176166/obj2019202287546176166891556_images/obj2019202287546176166891556_img2.png)
![img3](https://cungthi.online/upload/questionbank3_20201220/eduquestion/2019202287546176166/obj2019202287546176166891556_images/obj2019202287546176166891556_img3.png)
A.
2
B.
1
C.
-2
D.
-1
Đáp án và lời giải
Đáp án:D
Lời giải:
Chọn D
Ta có
Đáp án đúng là D