How can this formula be shown in a shorter form?
How can the indices be manipulated to show this sum in a form, that is suitable for analytical approaches?
Prove, that this is true.
What is the distributive law?
What is the associative law?
What is the commutative law?
How can a sum be solved by arithmetic progression?
What is the perturbation method?
How can a sum be solved by geometric progression?
How can multiple sums be solved?
What is the rule of interchanging order?
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