Finite Mathematics
7th Edition
ISBN: 9781337280426
Author: Stefan Waner, Steven Costenoble
Publisher: Cengage Learning
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Textbook Question
Chapter 3.3, Problem 33E
Traffic Flow The traffic through downtown Johannesburg follows the one-way system shown below, with traffic movement recorded at incoming and outgoing streets (in cars per minute) as shown.
a. Set up and solve a system of equations to solve for the traffic flow along the middle sections of the four streets.
b. Is there sufficient information to calculate the traffic along the middle section of Jeppe Street? If so, what is it? If not, why not?
c. Given that 400 cars per minute flow down the middle section of Bree Street, bow many cars per minute flow down the middle section of Simmons?
d. What is the minimum traffic flow along the middle section of Harrison Street?
e. Is there an upper limit to the possible traffic down Simmons Street consistent with the information given? Explain.
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Calculs Insights
πT
| cos x |³ dx
59
2
2. Consider the ODE
u' = ƒ (u) = u² + r
where r is a parameter that can take the values r = −1, −0.5, -0.1, 0.1. For each value of r:
(a) Sketch ƒ(u) = u² + r and determine the equilibrium points.
(b) Draw the phase line.
(d) Determine the stability of the equilibrium points.
(d) Plot the direction field and some sample solutions,i.e., u(t)
(e) Describe how location of the equilibrium points and their stability change as you increase the
parameter r.
(f) Using the matlab program phaseline.m generate a solution for each value of r and the initial
condition u(0) = 0.9. Print and turn in your result for r = −1. Do not forget to add a figure caption.
(g) In the matlab program phaseline.m set the initial condition to u(0) = 1.1 and simulate the ode
over the time interval t = [0, 10] for different values of r. What happens? Why? You do not need to
turn in a plot for (g), just describe what happens.
The following are suggested designs for group sequential studies. Using PROCSEQDESIGN, provide the following for the design O’Brien Fleming and Pocock.• The critical boundary values for each analysis of the data• The expected sample sizes at each interim analysisAssume the standardized Z score method for calculating boundaries.Investigators are evaluating the success rate of a novel drug for treating a certain type ofbacterial wound infection. Since no existing treatment exists, they have planned a one-armstudy. They wish to test whether the success rate of the drug is better than 50%, whichthey have defined as the null success rate. Preliminary testing has estimated the successrate of the drug at 55%. The investigators are eager to get the drug into production andwould like to plan for 9 interim analyses (10 analyzes in total) of the data. Assume thesignificance level is 5% and power is 90%.Besides, draw a combined boundary plot (OBF, POC, and HP)
Chapter 3 Solutions
Finite Mathematics
Ch. 3.1 - In Exercises 1-6, find three different particular...Ch. 3.1 - In Exercises 1-6, find three different particular...Ch. 3.1 - In Exercises 1-6, find three different particular...Ch. 3.1 - In Exercises 1-6, find three different particular...Ch. 3.1 - In Exercises 1-6, find three different particular...Ch. 3.1 - Prob. 6ECh. 3.1 - Prob. 7ECh. 3.1 - Prob. 8ECh. 3.1 - In Exercises 7-20, find all solutions of the given...Ch. 3.1 - In Exercises 7-20, find all solutions of the given...
Ch. 3.1 - Prob. 11ECh. 3.1 - Prob. 12ECh. 3.1 - Prob. 13ECh. 3.1 - Prob. 14ECh. 3.1 - In Exercises 7-20, find all solutions of the given...Ch. 3.1 - In Exercises 7-20, find all solutions of the given...Ch. 3.1 - Prob. 17ECh. 3.1 - Prob. 18ECh. 3.1 - Prob. 19ECh. 3.1 - In Exercises 7-20, find all solutions of the given...Ch. 3.1 - In Exercises 21-30, use technol.ogy to obtain...Ch. 3.1 - Prob. 22ECh. 3.1 - Prob. 23ECh. 3.1 - Prob. 24ECh. 3.1 - In Exercises 21-30, use technol.ogy to obtain...Ch. 3.1 - Prob. 26ECh. 3.1 - Prob. 27ECh. 3.1 - Prob. 28ECh. 3.1 - Prob. 29ECh. 3.1 - In Exercises 21-30, use technol.ogy to obtain...Ch. 3.1 - In Exercises 31-38, translate the given statement...Ch. 3.1 - In Exercises 31-38, translate the given statement...Ch. 3.1 - In Exercises 31-38, translate the given statement...Ch. 3.1 - In Exercises 31-38, translate the given statement...Ch. 3.1 - In Exercises 31-38, translate the given statement...Ch. 3.1 - Prob. 36ECh. 3.1 - Prob. 37ECh. 3.1 - Prob. 38ECh. 3.1 - Prob. 39ECh. 3.1 - Class Scheduling Enormous State Universitys Math...Ch. 3.1 - Prob. 41ECh. 3.1 - Nutrition Anthony Altino is mixing food for his...Ch. 3.1 - Nutrition One serving of Campbell Soup Companys...Ch. 3.1 - Nutrition One serving of Campbell Soup Companys...Ch. 3.1 - Protein Supplements Exercises 45-48 are based on...Ch. 3.1 - Protein Supplements Exercises 45-48 are based on...Ch. 3.1 - Protein Supplements Exercises 45-48 are based on...Ch. 3.1 - Protein Supplements Exercises 45-48 are based on...Ch. 3.1 - Prob. 49ECh. 3.1 - Investments: Energy Stocks In the 3-rnonth period...Ch. 3.1 - Prob. 51ECh. 3.1 - Investments: High Dividend Stocks During the first...Ch. 3.1 - Voting An appropriations bill passed the U.S....Ch. 3.1 - Voting The U.S. Senate has 100 members. For a bill...Ch. 3.1 - Intramural Sports The best sports dorm on campus,...Ch. 3.1 - Law Five years ago, Enormous State Universitys...Ch. 3.1 - Purchasing (from the GMAT) Elena purchased Brand X...Ch. 3.1 - Purchasing (based on a question from the GMAT)...Ch. 3.1 - Prob. 59ECh. 3.1 - Equilibrium Price The demand and supply functions...Ch. 3.1 - Supply and Demand (from the GRE Economics Test)...Ch. 3.1 - Prob. 62ECh. 3.1 - Equilibrium Price In June 2001 the retail price of...Ch. 3.1 - Equilibrium Price At the start of December 2001...Ch. 3.1 - Pollution Joe Slo, a college sophomore, neglected...Ch. 3.1 - Prob. 66ECh. 3.1 - Prob. 67ECh. 3.1 - Prob. 68ECh. 3.1 - Prob. 69ECh. 3.1 - A system of three equations in two unknowns...Ch. 3.1 - Prob. 71ECh. 3.1 - Prob. 72ECh. 3.1 - Prob. 73ECh. 3.1 - Referring to Exercise 39, but using different...Ch. 3.1 - Prob. 75ECh. 3.1 - Prob. 76ECh. 3.1 - Select one: If the addition or subtraction of two...Ch. 3.1 - Select one: If adding two linear equations gives...Ch. 3.1 - Prob. 79ECh. 3.1 - Prob. 80ECh. 3.1 - How likely do you think it is that a random system...Ch. 3.1 - Prob. 82ECh. 3.2 - In Exercises 1-42, use Gauss-Jordan row reduction...Ch. 3.2 - In Exercises 1-42, use Gauss-Jordan row reduction...Ch. 3.2 - In Exercises 1-42, use Gauss-Jordan row reduction...Ch. 3.2 - In Exercises 1-42, use Gauss-Jordan row reduction...Ch. 3.2 - In Exercises 1-42, use Gauss-Jordan row reduction...Ch. 3.2 - Prob. 6ECh. 3.2 - Prob. 7ECh. 3.2 - Prob. 8ECh. 3.2 - In Exercises 1-42, use Gauss-Jordan row reduction...Ch. 3.2 - In Exercises 1-42, use Gauss-Jordan row reduction...Ch. 3.2 - Prob. 11ECh. 3.2 - Prob. 12ECh. 3.2 - In Exercises 1-42, use Gauss-Jordan row reduction...Ch. 3.2 - Prob. 14ECh. 3.2 - In Exercises 1-42, use Gauss-Jordan row reduction...Ch. 3.2 - In Exercises 1-42, use Gauss-Jordan row reduction...Ch. 3.2 - Prob. 17ECh. 3.2 - In Exercises 1-42, use Gauss-Jordan row reduction...Ch. 3.2 - Prob. 19ECh. 3.2 - In Exercises 1-42, use Gauss-Jordan row reduction...Ch. 3.2 - In Exercises 1-42, use Gauss-Jordan row reduction...Ch. 3.2 - In Exercises 1-42, use Gauss-Jordan row reduction...Ch. 3.2 - In Exercises 1-42, use Gauss-Jordan row reduction...Ch. 3.2 - In Exercises 1-42, use Gauss-Jordan row reduction...Ch. 3.2 - In Exercises 1-42, use Gauss-Jordan row reduction...Ch. 3.2 - Prob. 26ECh. 3.2 - Prob. 27ECh. 3.2 - Prob. 28ECh. 3.2 - In Exercises 1-42, use Gauss-Jordan row reduction...Ch. 3.2 - In Exercises 1-42, use Gauss-Jordan row reduction...Ch. 3.2 - Prob. 31ECh. 3.2 - Prob. 32ECh. 3.2 - Prob. 33ECh. 3.2 - Prob. 34ECh. 3.2 - In Exercises 1-42, use Gauss-Jordan row reduction...Ch. 3.2 - Prob. 36ECh. 3.2 - In Exercises 1-42, use Gauss-Jordan row reduction...Ch. 3.2 - Prob. 38ECh. 3.2 - Prob. 39ECh. 3.2 - In Exercises 1-42, use Gauss-Jordan row reduction...Ch. 3.2 - Prob. 41ECh. 3.2 - Prob. 42ECh. 3.2 - Prob. 43ECh. 3.2 - Prob. 44ECh. 3.2 - In Exercises 43-46, use technology to solve the...Ch. 3.2 - Prob. 46ECh. 3.2 - In Exercises 47-50, use technology to solve the...Ch. 3.2 - Prob. 48ECh. 3.2 - Prob. 49ECh. 3.2 - In Exercises 47-50, use technology to solve the...Ch. 3.2 - Prob. 51ECh. 3.2 - Prob. 52ECh. 3.2 - Prob. 53ECh. 3.2 - Prob. 54ECh. 3.2 - Prob. 55ECh. 3.2 - Prob. 56ECh. 3.2 - Your friend Frans tells you that the system of...Ch. 3.2 - Prob. 58ECh. 3.2 - Prob. 59ECh. 3.2 - Prob. 60ECh. 3.2 - Prob. 61ECh. 3.2 - Prob. 62ECh. 3.2 - Prob. 63ECh. 3.2 - Prob. 64ECh. 3.2 - Prob. 65ECh. 3.2 - Prob. 66ECh. 3.2 - Prob. 67ECh. 3.2 - Prob. 68ECh. 3.3 - Resource Allocation You manage an ice cream...Ch. 3.3 - Resource Allocation You own a hamburger franchise...Ch. 3.3 - Resource Allocation Urban Community College is...Ch. 3.3 - Resource Allocation The Enormous State University...Ch. 3.3 - Latin Music Sales (Digital) In 2013, total...Ch. 3.3 - Latin Music Sales (Digital) In 2012, total...Ch. 3.3 - Purchasing Aircraft In Example 2 we saw that...Ch. 3.3 - Purchasing Aircraft Refer to Exercise 7. Rene...Ch. 3.3 - Supply A bagel store orders cream cheese from...Ch. 3.3 - Supply Refer to Exercise 9. The bagel store's...Ch. 3.3 - Pest Control Halmar the Great has boasted to his...Ch. 3.3 - Manufacturing Perfume The Fancy French Perfume...Ch. 3.3 - Donations The Enormous State University Good Works...Ch. 3.3 - Tenure Professor Walt is up for tenure and wishes...Ch. 3.3 - Airline Costs Exercises 15and16 are based on the...Ch. 3.3 - Airline Costs Exercises 15and16 are based on the...Ch. 3.3 - Investing: Inverse Mutual Funds Inverse mutual...Ch. 3.3 - Investing: Inverse Mutual Funds Inverse mutual...Ch. 3.3 - Investing: Lesser-Known Stocks Exercises 19 and 20...Ch. 3.3 - Investing: Lesser-Known Stocks Exercises 19 and 20...Ch. 3.3 - Prob. 21ECh. 3.3 - Prob. 22ECh. 3.3 - Market Share: Homeowners Insurance Three market...Ch. 3.3 - Prob. 24ECh. 3.3 - Inventory Control Red Bookstore wants to ship...Ch. 3.3 - Inventory Control The Tubular Ride Boogie Board...Ch. 3.3 - Prob. 27ECh. 3.3 - Tourism in the 1990s In the 1990s, significant...Ch. 3.3 - Prob. 29ECh. 3.3 - Tobacco The following table shows some data from...Ch. 3.3 - Traffic Flow One-way traffic through Enormous...Ch. 3.3 - Traffic Flow The traffic through downtown East...Ch. 3.3 - Traffic Flow The traffic through downtown...Ch. 3.3 - Traffic Flow Officials of the town of Hempstead...Ch. 3.3 - Traffic Management The Outer Village Town Council...Ch. 3.3 - Electric Current Electric current measures (in...Ch. 3.3 - Econometrics (from the GRE Economics Test) This...Ch. 3.3 - Prob. 38ECh. 3.3 - CAT Scans CAT (computerized axial tomographic)...Ch. 3.3 - CAT Scans CAT (computerized axial tomographic)...Ch. 3.3 - Prob. 41ECh. 3.3 - Prob. 42ECh. 3.3 - Prob. 43ECh. 3.3 - Prob. 44ECh. 3.3 - Voting In the 75th Congress (1937-1939) the U.S....Ch. 3.3 - Prob. 46ECh. 3.3 - Investments Things have not been going too well...Ch. 3.3 - Prob. 48ECh. 3.3 - Prob. 49ECh. 3.3 - Suppose that you obtained a solution for Exercise...Ch. 3.3 - Prob. 51ECh. 3.3 - Prob. 52ECh. 3.3 - Prob. 53ECh. 3.3 - Prob. 54ECh. 3.3 - In Exercises 51-56, x, y and z represent the...Ch. 3.3 - In Exercises 51-56, x, y and z represent the...Ch. 3.3 - Make up an entertaining word problem leading to...Ch. 3.3 - Prob. 58ECh. 3 - In Exercises 16, graph the given equations and...Ch. 3 - Prob. 2RECh. 3 - Prob. 3RECh. 3 - In Exercises 16, graph the given equations and...Ch. 3 - Prob. 5RECh. 3 - Prob. 6RECh. 3 - In Exercises 718, solve the given system of linear...Ch. 3 - In Exercises 718, solve the given system of linear...Ch. 3 - In Exercises 718, solve the given system of linear...Ch. 3 - In Exercises 718, solve the given system of linear...Ch. 3 - Prob. 11RECh. 3 - Prob. 12RECh. 3 - In Exercises 718, solve the given system of linear...Ch. 3 - In Exercises 718, solve the given system of linear...Ch. 3 - Prob. 15RECh. 3 - In Exercises 718, solve the given system of linear...Ch. 3 - Prob. 17RECh. 3 - Prob. 18RECh. 3 - Exercises 1922 are based on the following equation...Ch. 3 - Prob. 20RECh. 3 - Prob. 21RECh. 3 - Prob. 22RECh. 3 - Prob. 23RECh. 3 - Prob. 24RECh. 3 - Prob. 25RECh. 3 - Prob. 26RECh. 3 - Prob. 27RECh. 3 - Prob. 28RECh. 3 - Prob. 29RECh. 3 - Prob. 30RECh. 3 - Prob. 31RECh. 3 - Purchasing You are the buyer for OHaganBooks.com...Ch. 3 - Prob. 33RECh. 3 - Prob. 34RECh. 3 - Feeding Schedules Billy-Sean OHagan is John...Ch. 3 - Prob. 36RECh. 3 - Website Traffic OHaganBooks.com has two principal...Ch. 3 - Sales As the buyer at OHaganBooks.com, you are...Ch. 3 - Investing in Stocks Billy-Sean OHagan is the...Ch. 3 - Prob. 40RECh. 3 - Prob. 41RECh. 3 - Prob. 42RECh. 3 - Prob. 43RECh. 3 - Prob. 44RECh. 3 - Prob. 45RECh. 3 - Prob. 46RE
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