CPM Homework Help : CALC Problem 4-114

Write and evaluate a Riemann sum to estimate the area under the curve $g(x) = x · 2^{x + 2}$ for $−4 ≤ x ≤ 0$ using $20$ rectangles. Then use your graphing calculator to compute the sum.

Hint:

Notice that the area will be negative.

Answer:

Area $≈-6.448$
But you will need to show the setup and steps.

Use the eTool below to view the graph.
Click the link at right for the full version of the eTool: Calc 4-114 HW eTool