[![enter image description here](https://i.stack.imgur.com/Gvem8.jpg)](https://i.stack.imgur.com/Gvem8.jpg)

---

Posted pic of question because i don't know how to type this question (specially roots)
---------------------------------------------------------------------------------------

Please tell me how to solve such questions..
Initially solved question ( of for 0/0,∞/∞ etc) by differentiating the numerator and denominator and then solve
But here it is getting complicated by differentiating method.