Linear Algebra and Its Applications, Books a la Carte Edition Plus MyLab Math with Pearson eText -- Access Code Card (5th Edition)
5th Edition
ISBN: 9780321989925
Author: David C. Lay, Steven R. Lay, Judi J. McDonald
Publisher: PEARSON
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Textbook Question
Chapter 3.3, Problem 29E
Find a formula for the area of the
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Students have asked these similar questions
Here is an augmented matrix for a system of equations (three equations and three variables). Let the
variables used be x, y, and z:
1 2 4 6
0 1
-1
3
0
0
1
4
Note: that this matrix is already in row echelon form.
Your goal is to use this row echelon form to revert back to the equations that this represents, and then to
ultimately solve the system of equations by finding x, y and z.
Input your answer as a coordinate point: (x,y,z) with no spaces.
1
3 -4
In the following matrix
perform the operation 2R1 + R2 → R2.
-2 -1
6
After you have completed this, what numeric value is in the a22 position?
5
-2
0
1
6 12
Let A
=
6
7
-1
and B =
1/2 3 -14
-2 0
4
4
4
0
Compute -3A+2B and call the resulting matrix R.
If rij represent the individual entries in the matrix R, what numeric value is in 131?
Input your answer as a numeric value only.
Chapter 3 Solutions
Linear Algebra and Its Applications, Books a la Carte Edition Plus MyLab Math with Pearson eText -- Access Code Card (5th Edition)
Ch. 3.1 - Compute |5722030458030506|.Ch. 3.1 - Compute the determinants in Exercises 18 using a...Ch. 3.1 - Compute the determinants in Exercises 18 using a...Ch. 3.1 - Compute the determinants in Exercises 18 using a...Ch. 3.1 - Compute the determinants in Exercises 18 using a...Ch. 3.1 - Compute the determinants in Exercises 18 using a...Ch. 3.1 - Compute the determinants in Exercises 18 using a...Ch. 3.1 - Compute the determinants in Exercises 18 using a...Ch. 3.1 - Compute the determinants in Exercises 18 using a...Ch. 3.1 - Compute the determinants in Exercises 914 by a...
Ch. 3.1 - Compute the determinants in Exercises 914 by a...Ch. 3.1 - Compute the determinants in Exercises 914 by a...Ch. 3.1 - Compute the determinants in Exercises 914 by...Ch. 3.1 - Compute the determinants in Exercises 914 by...Ch. 3.1 - Compute the determinants in Exercises 914 by...Ch. 3.1 - The expansion of a 3 3 determinant can be...Ch. 3.1 - The expansion of a 3 3 determinant can be...Ch. 3.1 - The expansion of a 3 3 determinant can be...Ch. 3.1 - The expansion of a 3 3 determinant can be...Ch. 3.1 - In Exercises 1924, explore the effect of an...Ch. 3.1 - In Exercises 1924, explore the effect of an...Ch. 3.1 - In Exercises 1924, explore the effect of an...Ch. 3.1 - In Exercises 1924, explore the effect of an...Ch. 3.1 - In Exercises 1924, explore the effect of an...Ch. 3.1 - In Exercises 1924, explore the effect of an...Ch. 3.1 - Compute the determinants of the elementary...Ch. 3.1 - Compute the determinants of the elementary...Ch. 3.1 - Compute the determinants of the elementary...Ch. 3.1 - Compute the determinants of the elementary...Ch. 3.1 - Compute the determinants of the elementary...Ch. 3.1 - Compute the determinants of the elementary...Ch. 3.1 - Use Exercises 2528 to answer the questions in...Ch. 3.1 - Use Exercises 2528 to answer the questions in...Ch. 3.1 - In Exercises 3336, verify that det EA = (det...Ch. 3.1 - In Exercises 3336, verify that det EA = (det...Ch. 3.1 - In Exercises 3336, verify that det EA = (det...Ch. 3.1 - In Exercises 3336, verify that det EA = (det...Ch. 3.1 - Let A = [3142] Write 5A. Is det 5A = 5 det A?Ch. 3.1 - Let .A = [abcd] and let k be a scalar. Find a...Ch. 3.1 - In Exercises 39 and 40, A is an n n matrix. Mark...Ch. 3.1 - a. The cofactor expansion of det A down a column...Ch. 3.1 - Let u = [30] and v = [12]. Compute the area of the...Ch. 3.1 - Let u = [ab] and v = [c0], where a, b, and c are...Ch. 3.2 - PRACTICE PROBLEMS 1. Compute |13122512045131068|...Ch. 3.2 - Use a determinant to decide if v1, v2, and v3 are...Ch. 3.2 - Let A be an n n matrix such that A2 = I. Show...Ch. 3.2 - Each equation in Exercises 14 illustrates a...Ch. 3.2 - Each equation in Exercises 14 illustrates a...Ch. 3.2 - Each equation in Exercises 14 illustrates a...Ch. 3.2 - Each equation in Exercises 14 illustrates a...Ch. 3.2 - Find the determinants in Exercises 510 by row...Ch. 3.2 - Find the determinants in Exercises 510 by row...Ch. 3.2 - Find the determinants in Exercises 510 by row...Ch. 3.2 - Find the determinants in Exercises 510 by row...Ch. 3.2 - Find the determinants in Exercises 510 by row...Ch. 3.2 - Find the determinants in Exercises 510 by row...Ch. 3.2 - Combine the methods of row reduction and cofactor...Ch. 3.2 - Combine the methods of row reduction and cofactor...Ch. 3.2 - Combine the methods of row reduction and cofactor...Ch. 3.2 - Combine the methods of row reduction and cofactor...Ch. 3.2 - Find the determinants in Exercises 1520, where 15....Ch. 3.2 - Find the determinants in Exercises 1520, where 16....Ch. 3.2 - Find the determinants in Exercises 1520, where...Ch. 3.2 - Find the determinants in Exercises 1520, where...Ch. 3.2 - Find the determinants in Exercises 1520, where...Ch. 3.2 - Find the determinants in Exercises 1520, where...Ch. 3.2 - In Exercises 2123, use determinants to find out if...Ch. 3.2 - In Exercises 2123, use determinants to find out if...Ch. 3.2 - In Exercises 2123, use determinants to find out if...Ch. 3.2 - In Exercises 2426, use determinants to decide if...Ch. 3.2 - In Exercises 2426, use determinants to decide if...Ch. 3.2 - In Exercises 2426, use determinants to decide if...Ch. 3.2 - In Exercises 27 and 28, A and B are n n matrices....Ch. 3.2 - a. If three row interchanges are made in...Ch. 3.2 - Compute det B4 where B = [101112121]Ch. 3.2 - Use Theorem 3 (but not Theorem 4) to show that if...Ch. 3.2 - Show that if A is invertible, then detA1=1detA.Ch. 3.2 - Suppose that A is a square matrix such that det A3...Ch. 3.2 - Let A and B be square matrices. Show that even...Ch. 3.2 - Let A and P be square matrices, with P invertible....Ch. 3.2 - Let U be a square matrix such that UTU = 1. Show...Ch. 3.2 - Find a formula for det(rA) when A is an n n...Ch. 3.2 - Verify that det AB = (det A)(det B) for the...Ch. 3.2 - Verify that det AB = (det A)(det B) for the...Ch. 3.2 - Let A and B be 3 3 matrices, with det A = 3 and...Ch. 3.2 - Let A and B be 4 4 matrices, with det A = 3 and...Ch. 3.2 - Prob. 41ECh. 3.2 - Let A = [1001] and B = [abcd]. Show that det(A +...Ch. 3.2 - Verify that det A = det B + det C, where A =...Ch. 3.2 - Right-multiplication by an elementary matrix E...Ch. 3.3 - Let S be the parallelogram determined by the...Ch. 3.3 - Use Cramers rule to compute the solutions of the...Ch. 3.3 - Use Cramers rule to compute the solutions of the...Ch. 3.3 - Use Cramers rule to compute the solutions of the...Ch. 3.3 - Use Cramers rule to compute the solutions of the...Ch. 3.3 - Use Cramers rule to compute the solutions of the...Ch. 3.3 - Use Cramers rule to compute the solutions of the...Ch. 3.3 - In Exercises 710, determine the values of the...Ch. 3.3 - In Exercises 710, determine the values of the...Ch. 3.3 - In Exercises 710, determine the values of the...Ch. 3.3 - In Exercises 710, determine the values of the...Ch. 3.3 - In Exercises 1116, compute the adjugate of the...Ch. 3.3 - In Exercises 1116, compute the adjugate of the...Ch. 3.3 - In Exercises 1116, compute the adjugate of the...Ch. 3.3 - In Exercises 1116, compute the adjugate of the...Ch. 3.3 - In Exercises 1116, compute the adjugate of the...Ch. 3.3 - In Exercises 1116, compute the adjugate of the...Ch. 3.3 - Show that if A is 2 2, then Theorem 8 gives the...Ch. 3.3 - Suppose that all the entries in A are integers and...Ch. 3.3 - In Exercises 1922, find the area of the...Ch. 3.3 - In Exercises 1922, find the area of the...Ch. 3.3 - In Exercises 1922, find the area of the...Ch. 3.3 - In Exercises 19-22, find the area of the...Ch. 3.3 - Find the volume of the parallelepiped with one...Ch. 3.3 - Find the volume of the parallelepiped with one...Ch. 3.3 - Use the concept of volume to explain why the...Ch. 3.3 - Let T : m n be a linear transformation, and let p...Ch. 3.3 - Let S be the parallelogram determined by the...Ch. 3.3 - Repeat Exercise 27 with b1=[47], b2=[01], and...Ch. 3.3 - Find a formula for the area of the triangle whose...Ch. 3.3 - Let R be the triangle with vertices at (x1, y1),...Ch. 3.3 - Let T: 3 3 be the linear transformation...Ch. 3.3 - Let S be the tetrahedron in 3 with vertices at the...Ch. 3 - Mark each statement True or False. Justify each...Ch. 3 - Use row operations to show that the determinants...Ch. 3 - Use row operations to show that the determinants...Ch. 3 - Prob. 4SECh. 3 - Compute the determinants in Exercises 5 and 6. 5....Ch. 3 - Compute the determinants in Exercises 5 and 6. 6....Ch. 3 - Show that the equation of the line in 2 through...Ch. 3 - Prob. 8SECh. 3 - Exercise 9 and 10 concern determinants of the...Ch. 3 - Let f(t) = det V, with x1, x2, and x3 all...Ch. 3 - Find the area of the parallelogram determined by...Ch. 3 - Use the concept of area of a parallelogram to...Ch. 3 - Prob. 13SECh. 3 - Let A,B,C,D, and I be n n matrices. Use the...Ch. 3 - Let A, B, C, and D be n n matrices with A...Ch. 3 - Let J be the n n matrix of all 1s, and consider A...Ch. 3 - Prob. 17SE
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- 1 -2 4 10 My goal is to put the matrix 5 -1 1 0 into row echelon form using Gaussian elimination. 3 -2 6 9 My next step is to manipulate this matrix using elementary row operations to get a 0 in the a21 position. Which of the following operations would be the appropriate elementary row operation to use to get a 0 in the a21 position? O (1/5)*R2 --> R2 ○ 2R1 + R2 --> R2 ○ 5R1+ R2 --> R2 O-5R1 + R2 --> R2arrow_forwardThe 2x2 linear system of equations -2x+4y = 8 and 4x-3y = 9 was put into the following -2 4 8 augmented matrix: 4 -3 9 This augmented matrix is then converted to row echelon form. Which of the following matrices is the appropriate row echelon form for the given augmented matrix? 0 Option 1: 1 11 -2 Option 2: 4 -3 9 Option 3: 10 ܂ -2 -4 5 25 1 -2 -4 Option 4: 0 1 5 1 -2 Option 5: 0 0 20 -4 5 ○ Option 1 is the appropriate row echelon form. ○ Option 2 is the appropriate row echelon form. ○ Option 3 is the appropriate row echelon form. ○ Option 4 is the appropriate row echelon form. ○ Option 5 is the appropriate row echelon form.arrow_forwardLet matrix A have order (dimension) 2x4 and let matrix B have order (dimension) 4x4. What results when you compute A+B? The resulting matrix will have dimensions of 2x4. ○ The resulting matrix will be a single number (scalar). The resulting matrix will have dimensions of 4x4. A+B is undefined since matrix A and B do not have the same dimensions.arrow_forward
- If -1 "[a446]-[254] 4b = -1 , find the values of a and b. ○ There is no solution for a and b. ○ There are infinite solutions for a and b. O a=3, b=3 O a=1, b=2 O a=2, b=1 O a=2, b=2arrow_forwardA student puts a 3x3 system of linear equations is into an augmented matrix. The student then correctly puts the augmented matrix into row echelon form (REF), which yields the following resultant matrix: -2 3 -0.5 10 0 0 0 -2 0 1 -4 Which of the following conclusions is mathematically supported by the work shown about system of linear equations? The 3x3 system of linear equations has no solution. ○ The 3x3 system of linear equations has infinite solutions. The 3x3 system of linear equations has one unique solution.arrow_forwardSolve the following system of equations using matrices: -2x + 4y = 8 and 4x - 3y = 9 Note: This is the same system of equations referenced in Question 14. If a single solution exists, express your solution as an (x,y) coordinate point with no spaces. If there are infinite solutions write inf and if there are no solutions write ns in the box.arrow_forward
- Consider the table of values below. x y 2 63 3 70 4 77 5 84 Fill in the right side of the equation y= with an expression that makes each ordered pari (x,y) in the table a solution to the equation.arrow_forwardThere were 426 books sold in one week. The number of biology books sold was 5 times that of the number of psychology books. How many books each were sold?arrow_forwardPopulation decreases 5% each year. Starts with a starting population of 3705. Find that population after 5 years.arrow_forward
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