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One model for the spread of a rumor is that the rate of spread is proportional to the product of the fraction y of the popula

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사 се 사 사 се се 21 ће 20 うΣ40 yk (o h2o nio 1-20 then 20 10 0 620 До In 2o

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One model for the spread of a rumor is that the rate of spread is proportional to the product of the fraction y of the population who have heard the rumor and the fraction who have not heard the rumo...
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