Troubleshooting Summation Problem #23: Book Answer vs. My Calculation

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SUMMARY

The forum discussion centers on a discrepancy in the solution to Problem #23, where the book provides an answer of 2.84, while the user calculated 14.4. The user identified a potential error in their arithmetic, specifically neglecting to multiply by ∆x = 0.2, which is crucial for accurate summation in numerical methods. This highlights the importance of careful attention to detail in calculations involving discrete intervals.

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jwxie
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Please look at the attachments (for the problem and my work) , thank you.

The answer from the book is 2.84 but I got 14.4.

How come?

My problem is #23
 

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I didn't check all the details of your arithmetic, but it looks like you neglected to multiply by ∆x = .2.
 
Thanks!
 

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