Use a Riemann Sum to Approximate the Area Under the Graph

question 65

Short Answer

Use a Riemann sum to approximate the area under the graph of $f ( x ) = x ^ { 3 } , 1 \leq x \leq 3 , n = 4$ Use the midpoints of the intervals.
Enter your answer as just a reduced fraction of form $\frac { a } { b }$ .

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