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Left Rectangle Rule Right Rectangle Rule Middle Rectangle Rule Trapezoidal Rule 3.5 3 2.5 2 1.5 1 0.5 -0.5 -1 -1.5 -2 -2.5 -0.5 0.5 1 1.5 2 2.5 3 3.5 3.5 3 2.5 2 1.5 1 0.5 -0.5 -1 -1.5 -2 -2.5 -0.5 0.5 1 1.5 2 2.5 3 3.5 3.5 3 2.5 2 1.5 1 0.5 -0.5 -1 -1.5 -2 -2.5 -0.5 0.5 1 1.5 2 2.5 3 3.5 3.5 3 2.5 2 1.5 1 0.5 -0.5 -1 -1.5 -2 -2.5 -0.5 0.5 1 1.5 2 2.5 3 3.5 Left Rectangle Rule Middle Rectangle Rule Trapezoidal Rule Right Rectangle Rule