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A hospital patient is receiving pain medication through an IV. The drug enters the patient's bloodstream at a constant rate r. The rate at which the drug leaves the bloodstream is proportinal to the amount of drug present. Let t represent time (measured in minutes) and let y(t) represent the amount of the drug in the bloodstream at time t.
(a) Determine the first-order ODE that models this situation.
(b) Rewrite the ODE to show tht it is linear, and state whether it is homogeneous or non-homogeneous.
(c) Describe what form the solutions to this ODE will have.
(d) Solve to find a one-parameter family of solutions.
(e) Find a particular solution satisfying the initial condition y(0)=0.
Consider the following elements of the vector space P3 of all polynomials of degree less than or equal to 3. p(x)= x-1, q(x)=x+x2, r(x)= 1+x2-x3
Probability questions with cards and unbiased dice, Suppose that you select two cards without replacement from an ordinary deck of playing cards.
A basket contains 6 red apples and 9 green apples . A sample of 5 apples is drawn. Find the probability that the sample contains
A power Station and a factory are on opposite sides of a river 60m wide. A cable must be run from the power station to the factory. it costs $25 per meter to run a cable in the river and $20 per meter on land.
Where x is the number of years since the material was put into the vault. If 200 pounds of the material are initially put into the vault, how many pounds will be left after 90 years?
If a person is 5 feet 4 inches tall, what effect does a 8% increase in weight have on S?
Amy plans to paint both sides of a fence whose base is in the xy-plane and is given by the points (x,y) where x = 30cos^3(t) and y = 30sin^3(t) for 0
All incoming calls received a busy signal during that time. How many calls would you predict were not received by the Emergency 911 system while it was not operating?
A bin contains 62 light bulbs of which 7 are defective. If 4 light bulbs are randomly selected from the bin with replacement, find the probability that all the bulbs selected are good ones. Round to the nearest thousandth if necessary.
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Calculate the average rate of return for each stock during the 5-year period. Round your answers to two decimal places.b. Assume that someone held a portfolio consisting of 50% of Stock A and 50% of Stock What would have been the realized rate of r..
Who was Richardson's extrapolation named after? What are some of his significant contributions from his work in mathematics and/or related fields? Be sure to include at least one citation and reference for a scholarly source outside of your textbo..
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