Tank 0 Tank 1 Tank 2 Tank n FIGURE 1.5.6. A multiple cascade. (c) Show that the maximum value of Xn(1) for n > 0 is Mn = Xn(2n) = n" e¯" /n!.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section5.6: Exponential And Logarithmic Equations
Problem 74E
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A multiple cascade is shown in Fig. 1.5.6. At time t D 0,
tank 0 contains 1 gal of ethanol and 1 gal of water; all the
remaining tanks contain 2 gal of pure water each. Pure
water is pumped into tank 0 at 1 gal=min, and the varying mixture in each tank is pumped into the one below it
at the same rate. Assume, as usual, that the mixtures are
kept perfectly uniform by stirring. Let xn.t / denote the
amount of ethanol in tank n at time t.

Tank 0
Tank 1
Tank 2
Tank n
FIGURE 1.5.6. A multiple cascade.
(c) Show that the maximum value of Xn(1) for n > 0 is
Mn = Xn(2n) = n" e¯" /n!.
Transcribed Image Text:Tank 0 Tank 1 Tank 2 Tank n FIGURE 1.5.6. A multiple cascade. (c) Show that the maximum value of Xn(1) for n > 0 is Mn = Xn(2n) = n" e¯" /n!.
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