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# FP1 Edexcel Question (Series) watch

1. How would I go about a question if it's 'n' in the series and not 'r'? I'm doing question 10 (ii) but I don't understand the mark scheme.

http://pmt.physicsandmathstutor.com/...%20Edexcel.pdf
2. (Original post by amelienine)
How would I go about a question if it's 'n' in the series and not 'r'? I'm doing question 10 (ii) but I don't understand the mark scheme.

http://pmt.physicsandmathstutor.com/...%20Edexcel.pdf
means for each value of , the corresponding term is , which is independent of . There are values of .

Hence .
3. (Original post by SherlockHolmes)
means for each value of , the corresponding term is , which is independent of . There are values of .

Hence .
Why are there n+1 vales of r?
4. (Original post by amelienine)
Why are there n+1 vales of r?
.

I think of this as values from to and then you add for 0.
5. (Original post by SherlockHolmes)
.

I think of this as values from to and then you add for 0.
Oh okay, thank you!

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