Sociologists model the spread of rumors using logistic equations. The key assumption is that at any given time a fraction y of the population, where 0sys1 the rumor, while the remaining fraction 1-y does not. Furthermore, the rumor spreads by interactions between those who know the rumor and those who de number of such interactions is proportional to y(1-y). Therefore, the equation that describes the spread of the rumor is y'(t) = ky(1-y), where k is a positive number. The fraction of people who initially know the rumor is y(0) = yo, where 0sy, s1. Complete parts (a) to (c) below. ..... a. Solve this initial value problem and give the solution in terms of k and yo- Start by writing y'(t) = ky(1-y) in separated form. dy = kdt y(1-y) ook Integrate both sides. y In 1-y, = kt +C (Do not simplify.) ents Raise e to the power of each side of the equation. y cess 1-y Library Taka the recinrocal of each sirla of the eauation otions Textbook Print Clear all Check answ tesourc

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter6: Exponential And Logarithmic Functions
Section6.8: Fitting Exponential Models To Data
Problem 2TI: Sales of a video game released in the year 2000 took off at first, but then steadily slowed as time...
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Can someone please tell me why my answer is wrong? The part says solve for y. Separable Differential Equations
Sociologists model the spread of rumors using logistic equations. The key assumption is that at any given time a fraction y of the population, where 0sys1, knows
the rumor, while the remaining fraction 1-y does not. Furthermore, the rumor spreads by interactions between those who know the rumor and those who do not. The
number of such interactions is proportional to y(1 - y). Therefore, the equation that describes the spread of the rumor is y'(t) = ky(1 -y), where k is a positive real
number. The fraction of people who initially know the rumor is y(0) = Yo, where 0sy, s1. Complete parts (a) to (c) below.
a. Solve this initial value problem and give the solution in terms of k and yo
Start by writing y'(t) = ky(1 – y) in separated form.
1
y(1-y)
dy = kdt
Book
Integrate both sides.
In
= kt +C (Do not simplify.)
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Raise e to the power of each side of the equation.
y
= e kt.C
1-y
ccess
Library
Take the recinrocal of each side of the enuation
ptions
Textbook
Print
Clear all
Check answer
Resourc
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E
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Transcribed Image Text:Sociologists model the spread of rumors using logistic equations. The key assumption is that at any given time a fraction y of the population, where 0sys1, knows the rumor, while the remaining fraction 1-y does not. Furthermore, the rumor spreads by interactions between those who know the rumor and those who do not. The number of such interactions is proportional to y(1 - y). Therefore, the equation that describes the spread of the rumor is y'(t) = ky(1 -y), where k is a positive real number. The fraction of people who initially know the rumor is y(0) = Yo, where 0sy, s1. Complete parts (a) to (c) below. a. Solve this initial value problem and give the solution in terms of k and yo Start by writing y'(t) = ky(1 – y) in separated form. 1 y(1-y) dy = kdt Book Integrate both sides. In = kt +C (Do not simplify.) tents Raise e to the power of each side of the equation. y = e kt.C 1-y ccess Library Take the recinrocal of each side of the enuation ptions Textbook Print Clear all Check answer Resourc ENG DELL & 8 E T. Y G K B (7
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Transcribed Image Text:an Raise e to the power of each side of the equation. pok y 1-y tive eBook Take the reciprocal of each side of the equation. eBook 1-y kt y er Contents Solve for y. for Success y = kt + c y- 1 y = In media Library hase Options Textbook Print Clear all essible Resourc DELL F4 F9 F10 F11 $ & 2 4 6 8 E R Y D K C V B AR Σ
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