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Write an expression using sigma notation that represents the sum of the areas of the rectangles shown for the function below. Note, the rectangles have equal widths. Homework Help ✎

Rectangles under a curve. There are 6 left-end rectangles from -1 to 1.

Questions to consider:

How many rectangles are there, ?

Are they left-endpoint, right-endpoint or midpoint rectangles?




What is the width/base of each rectangle, ?

What is the function?

What is the starting value, ?
On what interval is the area being approximated?