- #1
Bashyboy
- 1,421
- 5
Homework Statement
Here is a link to the problem which I am currently working on:
http://math.umn.edu/~jara0025/Math4603/Math4603H9Answers.pdf
Homework Equations
The Attempt at a Solution
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The specific problem I am working on is found on page 3, and is the first problem on that page. The step I am having trouble with is
$$= \sum_{i=0}^{n-1} (x_{i+1} - x_i)(x^2_{i+1} + x_{i+1}x_i + x_i^2) (x_{i+1} - x_i)$$
$$ < \delta 3 \sum_{i=0}^{n-1} (x_{i+1} - x_i)$$
What is going on?
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