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(a) In a certain culture of bacteria the rate of increase is proportional to the number present. (i) If it is found that the number doubles in 4 hours, how many may be expected at the end of 12 hours? (ii) If there are 10' at the end of 3 hours and 4 x 10° at the end of 5 hours, how many were there in the beginning? ге

(a) In a certain culture of bacteria the rate of increase is proportional to the number present. (i) If it is found that the number doubles in 4 hours, how many may be expected at the end of 12 hours? (ii) If there are 10' at the end of 3 hours and 4 x 10° at the end of 5 hours, how many were there in the beginning? ге

Advanced Engineering Mathematics
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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Part a ii)
(a) In a certain culture of bacteria the rate of increase is proportional to the number present. (i) If it is found that the number doubles in 4 hours, how many may be expected at the end of 12 hours? (ii) If there are 10ª at the end of 3 hours and 4 × 10ª at the end of 5 hours, how many were there in the beginning? ге
Transcribed Image Text:(a) In a certain culture of bacteria the rate of increase is proportional to the number present. (i) If it is found that the number doubles in 4 hours, how many may be expected at the end of 12 hours? (ii) If there are 10ª at the end of 3 hours and 4 × 10ª at the end of 5 hours, how many were there in the beginning? ге
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