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Date: 22-5-2019
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Date: 19-5-2018
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Date: 26-9-2019
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Let a closed interval be partitioned by points , where the lengths of the resulting intervals between the points are denoted , , ..., . Let be an arbitrary point in the th subinterval. Then the quantity
is called a Riemann sum for a given function and partition, and the value is called the mesh size of the partition.
If the limit of the Riemann sums exists as , this limit is known as the Riemann integral of over the interval . The shaded areas in the above plots show the lower and upper sums for a constant mesh size.
REFERENCES:
New York: Wiley, pp. 324-327, 1999.Calculus: A New Horizon, 6th ed.Anton, H.
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