P = total number of individuals infected on any day N = total number of individuals infected on day zero R = number of individuals infected by contact with 1 person Find the number of day where P = 750 Pzero (ppl with the disease on day zero) = N P1 ( ppl with the disease of day 1) = N + NR = N(1+R) P2 = N +NR + R(N + NR) = N + NR + NR + NR^2 = N + 2NR + NR^2 = N(1 +2R + R^2) = N(1 + R)^2 P3 = (N + 2NR + NR^2) + R(N +2NR +NR^2) = N + 2NR + NR^2 + NR +2NR^2 + NR^3 = N + 3NR + 3NR^2 + NR^3 = N(1 + 3R + 3R^2 + R^3) = N(1 + R)^3 Pi (people with the disease on day i) = N(1+R)^i use python
P = total number of individuals infected on any day N = total number of individuals infected on day zero R = number of individuals infected by contact with 1 person Find the number of day where P = 750 Pzero (ppl with the disease on day zero) = N P1 ( ppl with the disease of day 1) = N + NR = N(1+R) P2 = N +NR + R(N + NR) = N + NR + NR + NR^2 = N + 2NR + NR^2 = N(1 +2R + R^2) = N(1 + R)^2 P3 = (N + 2NR + NR^2) + R(N +2NR +NR^2) = N + 2NR + NR^2 + NR +2NR^2 + NR^3 = N + 3NR + 3NR^2 + NR^3 = N(1 + 3R + 3R^2 + R^3) = N(1 + R)^3 Pi (people with the disease on day i) = N(1+R)^i use python
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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P = total number of individuals infected on any day
N = total number of individuals infected on day zero
R = number of individuals infected by contact with 1 person
Find the number of day where P = 750
Pzero (ppl with the disease on day zero) = N
P1 ( ppl with the disease of day 1) = N + NR = N(1+R)
P2 = N +NR + R(N + NR) = N + NR + NR + NR^2 = N + 2NR + NR^2 = N(1 +2R + R^2) = N(1 + R)^2
P3 = (N + 2NR + NR^2) + R(N +2NR +NR^2) = N + 2NR + NR^2 + NR +2NR^2 + NR^3 = N + 3NR + 3NR^2 + NR^3 = N(1 + 3R + 3R^2 + R^3) = N(1 + R)^3
Pi (people with the disease on day i) = N(1+R)^i
use python
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