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- Thread starter LMI
- Start date

- Joined
- Mar 16, 2016

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- Joined
- Apr 22, 2015

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Hi LM. There is still one arithmetic error. Recheck the third differences.I did the math again but this time I got -4.

Oh thank you so much! I found it!Hi LM. There is still one arithmetic error. Recheck the third differences.