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The average value of a positive function over an interval [a,b] is given by the area...

The average value of a positive function over an interval [a,b] is given by the area underneath the graph of the function divided by the length of the interval. Use a finite sum to estimate the average value of ?(?)=1/? on the interval [1,25] by partitioning the interval into four subintervals of equal length and evaluating f at the midpoints of the subintervals. Estimate for average value is

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