Is it possible to get a 4 digit pin from this? [closed]

calculus integration recreational-mathematics

I would be happy if you show your step - by - step solution for me to help you in which parts that you not understand or cannot solve.

For conclusion, the final answer is : -2.981266944005536....
So, if first 4 digit, then the pin will be : 2981
So, if first 4 decimal digit, then the pin will be : 9812

Thank you.

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