ㅤpoint c and point d are plotted on the graph. plot points a and b to form rectangle abdc with an area of 36 square units. plot
point e at (2, 4).
2 answers:
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Splitting up the interval of integration into subintervals gives the partition
Each subinterval has length . The right endpoints of each subinterval follow the sequence
with . Then the left-endpoint Riemann sum that approximates the definite integral is
and taking the limit as gives the area exactly. We have