How to use midpoint rienmann sum with a table

The video tutorial discusses the concept of midpoint in intervals, suggesting a rearrangement from six to three intervals for better calculation. It explains the process of calculating area approximation using the midpoint method and emphasizes the importance of deriving the midpoint from a graph for accurate results.

Discuss the importance of being aware of the intervals and midpoints when calculating area.

What is the area approximation calculated in the text, and how is it derived?