Linear Algebra: A Modern Introduction
Linear Algebra: A Modern Introduction
4th Edition
ISBN: 9781285463247
Author: David Poole
Publisher: Cengage Learning
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Chapter 2.4, Problem 5EQ

A coffee merchant sells three blends of coffee. A bag of the house blend contains 300 grams of Colombian beans and 200 grams of French roast beans. A bag of the special blend contains 200 grams of Colombian beans, 200 grams of Kenyan beans, and 100 grams of French roast beans. A bag of the gourmet blend contains 100 grams of Colombian beans, 200 grams of Kenyan beans, and 200 grams of French roast beans. The merchant has on hand 30 kilograms of Colombian beans,15 kilograms of Kenyan beans, and 25 kilograms of French roast beans. If he wishes to use up all of the beans, how many bags of each type of blend can be made?

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Chapter 2 Solutions

Linear Algebra: A Modern Introduction

Ch. 2.1 - In Exercises 1-6, determine which equations are...Ch. 2.1 - In Exercises 1-6, determine which equations are...Ch. 2.1 - In Exercises 1-6, determine which equations are...Ch. 2.1 - In Exercises 1-6, determine which equations are...Ch. 2.1 - In Exercises 1-6, determine which equations are...Ch. 2.1 - In Exercises 1-6, determine which equations are...Ch. 2.1 - In Exercises 7-10, find a linear equation that has...Ch. 2.1 - In Exercises 7-10, find a linear equation that has...Ch. 2.1 - In Exercises 7-10, find a linear equation that has...Ch. 2.1 - In Exercises 7-10, find a linear equation that has...
Ch. 2.1 - Prob. 11EQCh. 2.1 - In Exercises 11-14, find the solution set of each...Ch. 2.1 - In Exercises 11-14, find the solution set of each...Ch. 2.1 - In Exercises 11-14, find the solution set of each...Ch. 2.1 - In Exercises 19-24, solve the given system by back...Ch. 2.1 - In Exercises 19-24, solve the given system by back...Ch. 2.1 - In Exercises 19-24, solve the given system by back...Ch. 2.1 - In Exercises 19-24, solve the given system by back...Ch. 2.1 - In Exercises 19-24, solve the given system by back...Ch. 2.1 - In Exercises 19-24, solve the given system by back...Ch. 2.1 - The systems in Exercises 25 and 26 exhibit a lower...Ch. 2.1 - The systems in Exercises 25 and 26 exhibit a lower...Ch. 2.1 - Find the augmented matrices of the linear systems...Ch. 2.1 - Find the augmented matrices of the linear systems...Ch. 2.1 - Find the augmented matrices of the linear systems...Ch. 2.1 - Prob. 30EQCh. 2.1 - In Exercises 31 and 32, find a system of linear...Ch. 2.1 - Prob. 32EQCh. 2.2 - In Exercises 1-8, determine whether the given...Ch. 2.2 - In Exercises 1-8, determine whether the given...Ch. 2.2 - In Exercises 1-8, determine whether the given...Ch. 2.2 - In Exercises 1-8, determine whether the given...Ch. 2.2 - In Exercises 1-8, determine whether the given...Ch. 2.2 - In Exercises 1-8, determine whether the given...Ch. 2.2 - In Exercises 1-8, determine whether the given...Ch. 2.2 - In Exercises 1-8, determine whether the given...Ch. 2.2 - In Exercises 9-14, use elementary row operations...Ch. 2.2 - In Exercises 9-14, use elementary row operations...Ch. 2.2 - In Exercises 9-14, use elementary row operations...Ch. 2.2 - In Exercises 9-14, use elementary row operations...Ch. 2.2 - In Exercises 9-14, use elementary row operations...Ch. 2.2 - In Exercises 9-14, use elementary row operations...Ch. 2.2 - 15. Reverse the elementary row operations used in...Ch. 2.2 - 16. In general, what is the elementary row...Ch. 2.2 - Prob. 17EQCh. 2.2 - In Exercises 17 and 18, show that the given...Ch. 2.2 - 19. What is wrong with the following “proof” that...Ch. 2.2 - What is the net effect of performing the following...Ch. 2.2 - Students frequently perform the following type of...Ch. 2.2 - Consider the matrix A=[2314]. Show that any of the...Ch. 2.2 - What is the rank of each of the matrices in...Ch. 2.2 - Prob. 24EQCh. 2.2 - In Exercises 25-34, solve the given system of...Ch. 2.2 - In Exercises 25-34, solve the given system of...Ch. 2.2 - In Exercises 25-34, solve the given system of...Ch. 2.2 - In Exercises 25-34, solve the given system of...Ch. 2.2 - In Exercises 25-34, solve the given system of...Ch. 2.2 - In Exercises 25-34, solve the given system of...Ch. 2.2 - In Exercises 25-34, solve the given system of...Ch. 2.3 - In Exercises 1-6, determine if the vector is a...Ch. 2.3 - In Exercises 1-6, determine if the vector is a...Ch. 2.3 - In Exercises 1-6, determine if the vector is a...Ch. 2.3 - In Exercises 1-6, determine if the vector vis a...Ch. 2.3 - In Exercises 1-6, determine if the vector is a...Ch. 2.3 - In Exercises 7 and 8, determine if the vector b is...Ch. 2.3 - Show that 3=span([101],[110],[011])Ch. 2.3 - Use the method of Example 2.23 and Theorem 2.6 to...Ch. 2.3 - Use the method of Example 2.23 and Theorem 2.6 to...Ch. 2.3 - Use the method of Example 2.23 and Theorem 2.6 to...Ch. 2.4 - 1. Suppose that, in Example 2.27, 400 units of...Ch. 2.4 - 2. Suppose that in Example 2.27, 400 units of food...Ch. 2.4 - A florist offers three sizes of flower...Ch. 2.4 - 4. (a) In your pocket you have some nickels,...Ch. 2.4 - 5. A coffee merchant sells three blends of coffee....Ch. 2.4 - Redo Exercise 5, assuming that the house blend...Ch. 2.4 - In Exercises 7-14, balance the chemical equation...Ch. 2.4 - In Exercises 7-14, balance the chemical equation...Ch. 2.4 - In Exercises 7-14, balance the chemical equation...Ch. 2.4 - In Exercises 7-14, balance the chemical equation...Ch. 2.4 - In Exercises 7-14, balance the chemical equation...Ch. 2.4 - In Exercises 7-14, balance the chemical equation...Ch. 2.4 - In Exercises 7-14, balance the chemical equation...Ch. 2.4 - In Exercises 7-14, balance the chemical equation...Ch. 2.4 - For Exercises 19 and 20, determine the currents...Ch. 2.4 - For Exercises 19 and 20, determine the currents...Ch. 2.4 - 21. (a) Find the currents in the bridge circuit...Ch. 2.4 - 22. The networks in parts (a) and (b) of Figure...Ch. 2.4 - 23. Consider a simple economy with just two...Ch. 2.4 - Suppose the coal and steel industries form a...Ch. 2.4 - 25. A painter, a plumber, and an electrician...Ch. 2.4 - 31. In Example 2.35, describe all possible...Ch. 2 - What is the maximum rank of a 53 matrix? What is...
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