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Definite Integrals

Definite Integrals

Trapezoid Sum with Shortcuts Examples

Example 1

Use a trapezoid sum with 4 sub-intervals to estimate the area between the graph of f (x) = 4 – x2 and the x-axis on [0, 2]. Is this an overestimate or an underestimate?

Example 2

Let f(x) = 5x2 + 3x. Find TRAP(4) on [1, 2].