integration into summation, help!

[mhmtkrl]

Hi folks!
I am new to here and I just stuck at this point. Is there a rule to change the limits of integration? How we can calculate integration with summation?
Thank you in advance!

 

[Dr.Peterson]

Please state the entire problem you are working on, and state your immediate goal as clearly as you can. (Why, and how, do you want to change limits of integration, for example? Why is there a summation in the first place?) Also, it's a little hard to read some of your writing, so you may want to type up as much as you can, using words as needed.

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