7. In a certain bacterial culture, the rate of increase is proportional to the number of bacteria present. i) If the number double in three hours, find the hourly growth rate. ii) iii) How many bacteria are there after nine hours, if the original population is 104 ? After how many hours are there 4 x 10* bacteria?
7. In a certain bacterial culture, the rate of increase is proportional to the number of bacteria present. i) If the number double in three hours, find the hourly growth rate. ii) iii) How many bacteria are there after nine hours, if the original population is 104 ? After how many hours are there 4 x 10* bacteria?
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Transcribed Image Text:7. In a certain bacterial culture, the rate of increase is proportional to the number of bacteria
present.
i)
ii)
iii)
If the number double in three hours, find the hourly growth rate.
How many bacteria are there after nine hours, if the original population is 10* ?
After how many hours are there 4 x 104 bacteria?
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