1.3 Sum of an Arithmetic Series
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Green eggs and ham
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thanks so much for posting these videos they are extremely helpful and i appreciate it
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Great video. This was the last thing on my summer math packet, and now I'm finally done. Thanks!
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i was wondering why u have to subtract by 1 when you punch in the value of N in the formula?
TheTheprince5 1 year ago
@TheTheprince5 - the (n-1) part refers to the number of times you are adding the common difference (d).
We don't need to add "d" on the first term, we add it once to get the 2nd term, add it twice to get the 3rd term, etc... add it (n-1) times to get the "nth" term...
donalduncan 1 year ago