Elementary Differential Equations
10th Edition
ISBN: 9780470458327
Author: William E. Boyce, Richard C. DiPrima
Publisher: Wiley, John & Sons, Incorporated
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Chapter 3.2, Problem 7P
To determine
The longest interval in which the solution of the given initial value problem exists.
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McGilla Golf has decided to sell a new line of golf clubs. The clubs will sell for $895 per set and have a variable cost of $431 per set. The company has spent $200,000 for a marketing study that determined the company will sell 80,000 sets per year for seven years. The marketing study also determined that the company will lose sales of 8,600 sets per year of its high-priced clubs. The high-priced clubs sell at $1,325 and have variable costs of $645. The company will also increase sales of its cheap clubs by 10,800 sets per year. The cheap clubs sell for $340 and have variable costs of $141 per set. The fixed costs each year will be $14,350,000. The company has also spent $1,500,000 on research and development for the new clubs. The plant and equipment required will cost $43,700,000 and will be depreciated on a straight-line basis. The new clubs will also require an increase in net working capital of $3,625,000 that will be returned at the end of the project. The tax rate is 25…
Tri-County Utilities, Inc., supplies natural gas to customers in a three-county area. The company purchases natural gas from two companies: Southern Gas and Northwest Gas.
Demand forecasts for the coming winter season are as follows: Hamilton County, 400 units; Butler County, 200 units; and Clermont County, 300 units. Contracts to provide the following quantities have been written: Southern Gas, 500 units; and Northwest Gas, 400 units. Distribution costs for the counties vary, depending upon the location of the suppliers. The distribution costs per unit (in thousands of dollars)
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(a) Develop a network representation of this problem. (Submit a file with a maximum size of 1 MB.)
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(b) Develop a linear programming model that can be used to determine the plan that will minimize total distribution costs (in thousands of…
Use the method of undetermined coefficients to solve the given nonhomogeneous system.
dx
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dy
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Chapter 3 Solutions
Elementary Differential Equations
Ch. 3.1 - In each of Problems 1 through 8, find the general...Ch. 3.1 - In each of Problems 1 through 8, find the general...Ch. 3.1 - In each of Problems 1 through 8, find the general...Ch. 3.1 - In each of Problems 1 through 8, find the general...Ch. 3.1 - In each of Problems 1 through 8, find the general...Ch. 3.1 - In each of Problems 1 through 8, find the general...Ch. 3.1 - In each of Problems 1 through 8, find the general...Ch. 3.1 - In each of Problems 1 through 8, find the general...Ch. 3.1 - In each of Problems 9 through 16, find the...Ch. 3.1 - In each of Problems 9 through 16, find the...
Ch. 3.1 - In each of Problems 9 through 16, find the...Ch. 3.1 - Prob. 12PCh. 3.1 - Prob. 13PCh. 3.1 - Prob. 14PCh. 3.1 - In each of Problems 9 through 16, find the...Ch. 3.1 - Prob. 16PCh. 3.1 - Prob. 17PCh. 3.1 - Prob. 18PCh. 3.1 - Prob. 19PCh. 3.1 - Prob. 20PCh. 3.1 - Solve the initial value problem y″ − y′ − 2y = 0,...Ch. 3.1 - Solve the initial value problem 4y″ − y = 0, y(0)...Ch. 3.1 - Prob. 23PCh. 3.1 - Prob. 24PCh. 3.1 - Prob. 25PCh. 3.1 - Prob. 26PCh. 3.1 - Prob. 27PCh. 3.1 - Prob. 28PCh. 3.2 - In each of Problems 1 through 6, find the...Ch. 3.2 - In each of Problems 1 through 6, find the...Ch. 3.2 - In each of Problems 1 through 6, find the...Ch. 3.2 - In each of Problems 1 through 6, find the...Ch. 3.2 - In each of Problems 1 through 6, find the...Ch. 3.2 - In each of Problems 1 through 6, find the...Ch. 3.2 - In each of Problems 7 through 12, determine the...Ch. 3.2 - In each of Problems 7 through 12, determine the...Ch. 3.2 - In each of Problems 7 through 12, determine the...Ch. 3.2 - In each of Problems 7 through 12, determine the...Ch. 3.2 - In each of Problems 7 through 12, determine the...Ch. 3.2 - In each of Problems 7 through 12, determine the...Ch. 3.2 - Verify that y1(t) = t2 and y2(t) = t−1 are two...Ch. 3.2 - Verify that y1(t) = 1 and y2(t) = t1/2 are...Ch. 3.2 - Show that if y = φ(t) is a solution of the...Ch. 3.2 - Can y = sin(t2) be a solution on an interval...Ch. 3.2 - If the Wronskian W of f and g is 3e4t, and if f(t)...Ch. 3.2 - Prob. 18PCh. 3.2 - If W(f, g) is the Wronskian of f and g, and if u =...Ch. 3.2 - If the Wronskian of f and g is t cos t − sin t,...Ch. 3.2 - Assume that y1 and y2 are a fundamental set of...Ch. 3.2 - Prob. 22PCh. 3.2 - Prob. 23PCh. 3.2 - Prob. 24PCh. 3.2 - Prob. 25PCh. 3.2 - Prob. 26PCh. 3.2 - Prob. 27PCh. 3.2 - Prob. 28PCh. 3.2 - Prob. 29PCh. 3.2 - Prob. 30PCh. 3.2 - Prob. 31PCh. 3.2 - Prob. 32PCh. 3.2 - Prob. 33PCh. 3.2 - Prob. 34PCh. 3.2 - Prob. 35PCh. 3.2 - If the Wronskian of any two solutions of y″ +...Ch. 3.2 - Prob. 37PCh. 3.2 - Prob. 38PCh. 3.2 - Prob. 39PCh. 3.2 - Prob. 40PCh. 3.2 - Prob. 41PCh. 3.2 - Prob. 42PCh. 3.2 - Prob. 43PCh. 3.2 - Prob. 44PCh. 3.2 - Prob. 45PCh. 3.2 - Prob. 46PCh. 3.2 - Prob. 47PCh. 3.2 - Prob. 48PCh. 3.2 - Prob. 49PCh. 3.2 - Prob. 50PCh. 3.2 - Prob. 51PCh. 3.3 - In each of Problems 1 through 6, use Euler’s...Ch. 3.3 - In each of Problems 1 through 6, use Euler’s...Ch. 3.3 - In each of Problems 1 through 6, use Euler’s...Ch. 3.3 - In each of Problems 1 through 6, use Euler’s...Ch. 3.3 - In each of Problems 1 through 6, use Euler’s...Ch. 3.3 - In each of Problems 1 through 6, use Euler’s...Ch. 3.3 - In each of Problems 7 through 16, find the general...Ch. 3.3 - In each of Problems 7 through 16, find the general...Ch. 3.3 - In each of Problems 7 through 16, find the general...Ch. 3.3 - In each of Problems 7 through 16, find the general...Ch. 3.3 - Prob. 11PCh. 3.3 - Prob. 12PCh. 3.3 - In each of Problems 7 through 16, find the general...Ch. 3.3 - Prob. 14PCh. 3.3 - Prob. 15PCh. 3.3 - Prob. 16PCh. 3.3 - Prob. 17PCh. 3.3 - Prob. 18PCh. 3.3 - Prob. 19PCh. 3.3 - Prob. 20PCh. 3.3 - In each of Problems 17 through 22, find the...Ch. 3.3 - In each of Problems 17 through 22, find the...Ch. 3.3 - Prob. 23PCh. 3.3 - Prob. 24PCh. 3.3 - Prob. 25PCh. 3.3 - Prob. 26PCh. 3.3 - Prob. 27PCh. 3.3 - Prob. 28PCh. 3.3 - Prob. 29PCh. 3.3 - Prob. 30PCh. 3.3 - Prob. 31PCh. 3.3 - Prob. 32PCh. 3.3 - Prob. 33PCh. 3.3 - Prob. 34PCh. 3.3 - Prob. 35PCh. 3.3 - Prob. 36PCh. 3.3 - Prob. 37PCh. 3.3 - Prob. 38PCh. 3.3 - Prob. 39PCh. 3.3 - Prob. 40PCh. 3.3 - Prob. 41PCh. 3.3 - Prob. 42PCh. 3.3 - Prob. 43PCh. 3.3 - Prob. 44PCh. 3.3 - Prob. 45PCh. 3.3 - Prob. 46PCh. 3.4 - In each of Problems 1 through 10, find the general...Ch. 3.4 - Prob. 2PCh. 3.4 - Prob. 3PCh. 3.4 - Prob. 4PCh. 3.4 - Prob. 5PCh. 3.4 - Prob. 6PCh. 3.4 - Prob. 7PCh. 3.4 - Prob. 8PCh. 3.4 - Prob. 9PCh. 3.4 - Prob. 10PCh. 3.4 - In each of Problems 11 through 14, solve the given...Ch. 3.4 - Prob. 12PCh. 3.4 - Prob. 13PCh. 3.4 - Prob. 14PCh. 3.4 - Prob. 15PCh. 3.4 - Prob. 16PCh. 3.4 - Prob. 17PCh. 3.4 - Consider the initial value problem
9y″ + 12y′ + 4y...Ch. 3.4 - Prob. 19PCh. 3.4 - Prob. 20PCh. 3.4 - Prob. 21PCh. 3.4 - Prob. 22PCh. 3.4 - Prob. 23PCh. 3.4 - Prob. 24PCh. 3.4 - Prob. 25PCh. 3.4 - Prob. 26PCh. 3.4 - Prob. 27PCh. 3.4 - Prob. 28PCh. 3.4 - Prob. 29PCh. 3.4 - Prob. 30PCh. 3.4 - Prob. 31PCh. 3.4 - The method of Problem 20 can be extended to second...Ch. 3.4 - In each of Problems 33 through 36, use the method...Ch. 3.4 - Prob. 34PCh. 3.4 - Prob. 35PCh. 3.4 - Prob. 36PCh. 3.4 - Prob. 37PCh. 3.4 - Prob. 38PCh. 3.4 - Prob. 39PCh. 3.4 - Euler Equations. In each of Problems 40 through...Ch. 3.4 - Prob. 41PCh. 3.4 - Prob. 42PCh. 3.4 - Prob. 43PCh. 3.4 - Prob. 44PCh. 3.4 - Prob. 45PCh. 3.5 - In each of Problems 1 through 14, find the general...Ch. 3.5 - In each of Problems 1 through 14, find the general...Ch. 3.5 - In each of Problems 1 through 14, find the general...Ch. 3.5 - Prob. 4PCh. 3.5 - Prob. 5PCh. 3.5 - Prob. 6PCh. 3.5 - Prob. 7PCh. 3.5 - In each of Problems 1 through 14, find the general...Ch. 3.5 - Prob. 9PCh. 3.5 - Prob. 10PCh. 3.5 - In each of Problems 1 through 14, find the general...Ch. 3.5 - Prob. 12PCh. 3.5 - Prob. 13PCh. 3.5 - Prob. 14PCh. 3.5 - Prob. 15PCh. 3.5 - Prob. 16PCh. 3.5 - In each of Problems 15 through 20, find the...Ch. 3.5 - Prob. 18PCh. 3.5 - Prob. 19PCh. 3.5 - Prob. 20PCh. 3.5 - Prob. 29PCh. 3.5 - Prob. 30PCh. 3.5 - Prob. 31PCh. 3.5 - Prob. 32PCh. 3.5 - Prob. 33PCh. 3.5 - Prob. 34PCh. 3.5 - Prob. 35PCh. 3.5 - Prob. 36PCh. 3.5 - Prob. 37PCh. 3.5 - Prob. 38PCh. 3.5 - Prob. 39PCh. 3.6 - In each of Problems 1 through 4, use the method of...Ch. 3.6 - Prob. 2PCh. 3.6 - Prob. 3PCh. 3.6 - Prob. 4PCh. 3.6 - Prob. 5PCh. 3.6 - Prob. 6PCh. 3.6 - Prob. 7PCh. 3.6 - Prob. 8PCh. 3.6 - Prob. 9PCh. 3.6 - Prob. 10PCh. 3.6 - Prob. 11PCh. 3.6 - Prob. 12PCh. 3.6 - Prob. 13PCh. 3.6 - Prob. 14PCh. 3.6 - Prob. 15PCh. 3.6 - Prob. 16PCh. 3.6 - Prob. 17PCh. 3.6 - Prob. 18PCh. 3.6 - Prob. 19PCh. 3.6 - Prob. 20PCh. 3.6 - Prob. 21PCh. 3.6 - Prob. 22PCh. 3.6 - Prob. 23PCh. 3.6 - Prob. 24PCh. 3.6 - Prob. 25PCh. 3.6 - Prob. 26PCh. 3.6 - Prob. 27PCh. 3.6 - Prob. 28PCh. 3.6 - Prob. 29PCh. 3.6 - Prob. 30PCh. 3.6 - Prob. 31PCh. 3.6 - Prob. 32PCh. 3.7 - In each of Problems 1 through 4, determine ω0, R,...Ch. 3.7 - Prob. 2PCh. 3.7 - Prob. 3PCh. 3.7 - Prob. 4PCh. 3.7 - Prob. 5PCh. 3.7 - Prob. 6PCh. 3.7 - Prob. 7PCh. 3.7 - Prob. 8PCh. 3.7 - Prob. 9PCh. 3.7 - Prob. 10PCh. 3.7 - Prob. 11PCh. 3.7 - Prob. 12PCh. 3.7 - Prob. 13PCh. 3.7 - Prob. 14PCh. 3.7 - Prob. 15PCh. 3.7 - Prob. 16PCh. 3.7 - Prob. 17PCh. 3.7 - Prob. 18PCh. 3.7 - Prob. 19PCh. 3.7 - Prob. 20PCh. 3.7 - Prob. 21PCh. 3.7 - Prob. 22PCh. 3.7 - Prob. 23PCh. 3.7 - Prob. 24PCh. 3.7 - Prob. 26PCh. 3.7 - Prob. 27PCh. 3.7 - Prob. 28PCh. 3.7 - Prob. 29PCh. 3.7 - Prob. 30PCh. 3.7 - Prob. 31PCh. 3.8 - Prob. 1PCh. 3.8 - Prob. 2PCh. 3.8 - Prob. 3PCh. 3.8 - Prob. 4PCh. 3.8 - Prob. 5PCh. 3.8 - Prob. 6PCh. 3.8 - Prob. 7PCh. 3.8 - Prob. 8PCh. 3.8 - Prob. 9PCh. 3.8 - Prob. 10PCh. 3.8 - Prob. 11PCh. 3.8 - Prob. 12PCh. 3.8 - Prob. 14PCh. 3.8 - Prob. 15PCh. 3.8 - Prob. 16P
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