(c) Find R' (3). Using correct units, explain the meaning of that value in the context of this problem. = 10. (d) Find the rate at which the total amount of water in the retention pond is changing at time t (Indicate units of measure.)
(c) Find R' (3). Using correct units, explain the meaning of that value in the context of this problem. = 10. (d) Find the rate at which the total amount of water in the retention pond is changing at time t (Indicate units of measure.)
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:(c) Find R' (3). Using correct units, explain the meaning of that value in the context of this problem.
(d) Find the rate at which the total amount of water in the retention pond is changing at time t = 10.
(Indicate units of measure.)

Transcribed Image Text:Water is added to a storm water retention pond during a heavy rainstorm at the following rate in
gallons per minute:
R(t)=et, for 0 < t < 5
-0.2t
= 50e 0.2t, for 5 ≤ t < 15
Water exits the storm water retention pond into a stream at the following rate in gallons per minute:
ež
е
In(t+9) '
S (t) =
for 0 < t < 15
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