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Katherine on Instagram: "Riemann sums and integrals both aim to calculate the area under a curve, but they differ in precision and method. A Riemann sum is an approximation, where the area is estimated by summing the areas of rectangles under the curve. The width of each rectangle is based on a partition of the interval, and the height is taken from the function’s value at a chosen point within each subinterval (like the left endpoint, right endpoint, or midpoint). As the number of rectangles in