Problem 11 (10 points). Suppose that the population in a given region over time is mod-...
(15 points) Problem (7) A culture of living cells in a lab has a population of 100 cells when nutrients are added at time t = 0. Suppose the population P(t) (in cells) increases at a rate given by P' (t) = 90e-0.16 (in cells per hour) Find the total number of cells after 1 hour.
Given an elliptic curve E mod p, where p is a prime, the number
of points on the curve is denoted as #E. Also, the ECDLP is
expressed as dP = T.
Which of these statements is TRUE? (select all that apply)
Incorrect 0/0.15 pts Question 18 The image below illustrates different elliptic curves. Elliptic curve cryptosystems rely on the hardness of the generalized discrete logarithm problem. ECDLP.png Given an elliptic curve E mod p, where p is a prime,...
Differential equations question.
dp/dt = 0.3 (1-p/10) (p/10-2)p
1. (5 points) Consider the given population model, where P(t) is the population at time t A. For what values of P is the population in equilibrium? B. For what values of P is it increasing? C. For what values is it decreasing? : (i-T-YE -2) p dt120 her
Problem 8 [15 points: A model for the population P(t) in a suburb of a city (in thousands) is given by the initial-value problem dP dt = P(10-P), P(0)-5, where t is measured in months (a) Solve this IVP for P(t)7. (b) What is the limiting value of the population [3] -half of this limiting value pr
Another model for a growth function for a limited population is given by the Gompertz function, which is a solution of the differential equation dP =cln (1) P dt where c is a positive constant and K is the carrying capacity (a) Solve this differential equation (assume P(0) = Po). (b) As time goes on (to infinity), does the population die off, grow without bound, or settle on some finite number?
11. The population of a culture of bacteria at time t (in hours) is given by the following equation: P(t) 10e Find the doubling time.
Another model for a growth function for a limited population is
given by the Gompertz function, which is a solution of the
differential equation
where c is a positive constant and K is the carrying
capacity.
(a) Solve this differential equation (assume
P(0)=P0).
(b) As time goes on (to infinity), does the population die off,
grow without bound, or settle on some finite number?
Problem #10: A model for a certain population P() is given by the initial value problem P(10-1-10-9 P), P(0) - 1000000 dt where t is measured in months (a) What is the limiting value of the population? (b) At what time (i.e., after how many months) will the populaton be equal to one fifth of the limiting value in (a)? (Do not round any numbers for this part. You work should be all symbolic.) Problem #10(a): 100000000 Enter your answer...
11. The population of a small town in Montana in 1985 was found to be given by P=35,000e015+ where t is time measured from 1985. What was the population in the year 2000, and when will the population reach 60,000?
A population numbers 14,000 organisms initially and grows by 8.8% each year. Suppose P represents population, and t the number of years of growth. An exponential model for the population can be written in the form P = a.b' where P = If 24500 dollars is invested at an interest rate of 10 percent per year, find the value of the investment at the end of 5 years for the following compounding methods, to the nearest cent. (a) Annual: $...