[ Mức độ 2] Tổng số đường tiệm cận đứng và tiệm cận ngang của đồ thị hàm số
là
A.
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/202027021084226959415/obj202027021084226959415355537_images/obj202027021084226959415355537_img1.png)
B.
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/202027021084226959415/obj202027021084226959415572623_images/obj202027021084226959415572623_img1.png)
C.
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/202027021084226959415/obj202027021084226959415365198_images/obj202027021084226959415365198_img1.png)
D.
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/202027021084226959415/obj202027021084226959415476711_images/obj202027021084226959415476711_img1.png)
Đáp án và lời giải
Đáp án:B
Lời giải:
Vì
.
.
.
Và
.
Vậy đồ thị hàm số có 3 đường tiệm cận.
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/202027021084226959415/obj202027021084226959415439848_images/obj202027021084226959415439848_img1.png)
![img2](https://cungthi.online/upload/questionbank3_20201220/eduquestion/202027021084226959415/obj202027021084226959415439848_images/obj202027021084226959415439848_img2.png)
![img3](https://cungthi.online/upload/questionbank3_20201220/eduquestion/202027021084226959415/obj202027021084226959415439848_images/obj202027021084226959415439848_img3.png)
![img4](https://cungthi.online/upload/questionbank3_20201220/eduquestion/202027021084226959415/obj202027021084226959415439848_images/obj202027021084226959415439848_img4.png)