: In a certain culture of bacteria, the rate of increase is proportional to the number present. FIND : (a) If it is found that the number doubles in 6 hrs, how many may be expected at the end of 18 hrs? (b) If there are 102 at the end of 4 hrs, and 8 ∙ 102 at the end of 8 hrs, how many were there in the beginning?
: In a certain culture of bacteria, the rate of increase is proportional to the number present. FIND : (a) If it is found that the number doubles in 6 hrs, how many may be expected at the end of 18 hrs? (b) If there are 102 at the end of 4 hrs, and 8 ∙ 102 at the end of 8 hrs, how many were there in the beginning?
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section: Chapter Questions
Problem 73RE
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APPLICATIONS OF DIFFERENTIAL EQUATIONS :
In a certain culture of bacteria, the rate of increase is proportional to the number
present.
FIND :
(a) If it is found that the number doubles in 6 hrs, how many may be
expected at the end of 18 hrs?
(b) If there are 102 at the end of 4 hrs, and 8 ∙ 102 at
the end of 8 hrs, how many were there in the beginning?
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