Summation of Series: Learn the Basics

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The discussion revolves around understanding the basics of summation of series. A participant expresses confusion about the mathematical rules and requests hints to grasp the concept. Another contributor suggests writing out the series for n=2, 3, 4, and comparing it to a specific series. This approach helps clarify the concept for the original poster, leading to a moment of understanding. The conversation highlights the importance of breaking down complex mathematical ideas into simpler comparisons for better comprehension.
coconut62
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Please see attached image.

I don't understand how is it so. :confused:

(Attempt): I already thought very hard, and obviously for this kind of mathematical rules, if i don't know the concept, i can't really make any attempt right? Just give me some hint then.

Thanks.
 

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Write out the series for n=2, 3, 4, ... and compare it with the series 1+22+32+...

ehild
 
Okay, I suddenly see light. The whole thing is clear, thanks.
 

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