Question
Let $r_{j}$ denote the total rainfall in Portland on the jth day of the year in 2009. Interpret $\sum_{j=1}^{31} r_{j}$
Step 1
The notation $r_{j}$ represents the total rainfall in Portland on the jth day of the year in 2009. Show more…
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A rainstorm hit Portland, Maine, in October $1996,$ resulting in record rainfall. The rainfall rate $R(t)$ on October 21 is recorded, in centimeters per hour, in the following table, where $t$ is the number of hours since midnight. Compute the total rainfall during this 24 -hour period and indicate on a graph how this quantity can be interpreted as an area.
THE INTEGRAL
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