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2-10.

Recall that the area between a function and the -axis is defined as negative if the region is below the ‑axis. Therefore, given what is the area under the curve for ?

It's a triangle with base , height .

Use the eTool below to view the graph of the function.
Click on the link to the right to view the full version of the eTool. Calc 2-10 HW eTool