Concept explainers
Health An epidemic was spreading such that t weeks after its outbreak it had infected
people. Twenty-five weeks after the outbreak, a vaccine was developed and administered to the public. At that point, the number of people infected was governed by the model
Approximate the number of people that the vaccine prevented from becoming ill during the epidemic.
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Chapter 5 Solutions
Calculus: An Applied Approach (MindTap Course List)
- The number N of beavers in a given area after x years can be approximated by N=5.5100.23x,0x10. Use the model to approximate how many years it will take for the beaver population to reach 78.arrow_forwardThe rate of change of an autocatalytic chemical reaction is kQxkx2 where Q is the amount of the original substance, x is the amount of substance formed, and k is a constant of proportionality. Factor the expression.arrow_forwardDialysis A model that estimates the concentration of urea in the body for a particular dialysis patient, following a dialysis session is given by C(t,g)=0.6(0.96)(210t/1500)1+gt126t900[1(0.96)(210t/1500)1]. Where t represents the number of minutes of the dialysis session and g represents the rate at which the body generates urea in mg per minute. Source: Clinical Dialysis. a. Find C(180,8). b. Using the total differential, estimate the urea concentration if the dialysis session of part was cut short by 10 minutes and the urea generation rate was 9 mg per minute. Compare this with the actual concentration. Hint: First, replace the variable g with the number 8, this reducing the function to one variable. Then use your graphing calculator to calculate the partial derivatives Ct(180,8). A similar procedure can be done for Cg(180,8).) c. d.arrow_forward
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