In this task, you are given a question in English, and your task is to translate it into Persian.

Let me give you an example: How do I look up my pay stubs for McDonald's?
The answer to this example can be: چگونه می توانم خرده فروشی های خود را برای مک دونالد جستجو کنم؟
Here is why: This is a good example. The above sentence is correctly translated from English to Persian.

OK. solve this:
What is the value of [math]\displaystyle\int_{0}^{\infty} \dfrac{x}{x^2+a^2}\,dx [/math]?
Answer:
مقدار این چیست؟ [math]\displaystyle\int_{0}^{\infty} \dfrac{x}{x^2+a^2}\,dx [/math]