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1-153.

For f(x) = 3x cos(x), approximate the area under the curve for 0 ≤ x using two different methods. If the actual area is approximately 1.712 square units, which of your methods was most accurate? Analyze why that particular method was more accurate. Homework Help ✎

Answers vary, but be sure to take into account the width of the rectangles and/or trapezoids.