sums. | Mathematics | Page 1

sacred gazelle Jun 11, 2024, 5:29 PM

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Why did they have the 1/n-1 in the second sum?

gloomy eagleBOT Jun 11, 2024, 5:29 PM

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surreal void Jun 11, 2024, 5:34 PM

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sacred gazelle Why did they have the 1/n-1 in the second sum?

Well it's the prelast term isn't it?

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And they wrote so that it gets more obvious that everything cancels out other than 1-1/n

sacred gazelle Jun 11, 2024, 5:47 PM

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surreal void Well it's the prelast term isn't it?

Idk what's the prelast term

surreal void Jun 11, 2024, 5:48 PM

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The term before the last term

sacred gazelle Jun 11, 2024, 5:48 PM

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Oh

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Yeah

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I know it cancels out in the last term

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But how did we get that 1/n-1

surreal void Jun 11, 2024, 5:49 PM

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Before n comes n-1

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Simple as that

sacred gazelle Jun 11, 2024, 5:51 PM

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Ohhhhhh

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Okay I get it now

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We couldn't have just said 1/n?

surreal void Jun 11, 2024, 5:51 PM

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They just wrote it out explicitly

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Imagine all numbers from 1 to 10

sacred gazelle Jun 11, 2024, 5:52 PM

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We had to be saying 1/n-1

surreal void Jun 11, 2024, 5:52 PM

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1 + ... + 10 = 1 + ... + 9 + 10

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It's the same

sacred gazelle Jun 11, 2024, 5:52 PM

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Yeah I got it

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Thank you so much!!!

forest root Jun 11, 2024, 6:15 PM

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sacred gazelle We couldn't have just said 1/n?

We could have

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But then the student would whine that they dont see how the next line appeared

#sums.