ELEMENTARY LINEAR ALGEBRA-W/ACCESS
12th Edition
ISBN: 9781119762911
Author: Anton
Publisher: WILEY
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Textbook Question
Chapter 2.2, Problem 23E
Use row reduction to show that
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Answer the number questions with the following answers
+/- 2 sqrt(2)
+/- i sqrt(6)
(-3 +/-3 i sqrt(3))/4
+/-1
+/- sqrt(6)
+/- 2/3 sqrt(3)
4
-3 +/- 3 i sqrt(3)
1
Matching 10 points
Factor and Solve
1)x3-216 0, x = {6,[B]}
2) 16x3 = 54 x-[3/2,[D]]
3)x4x2-42 0 x= [ +/-isqrt(7), [F] }
4)x+3-13-9x x=[+/-1.[H]]
5)x38x2+16x=0, x = {0,[K}}
6) 2x6-10x-48x2-0 x-[0, [M], +/-isqrt(3))
7) 3x+2x²-8 x = {+/-i sqrt(2), {Q}}
8) 5x³-3x²+32x=2x+18 x = {3/5, [S]}
[B]
[D]
[F]
[H]
[K]
[M]
[Q]
+/-2 sqrt(2)
+/- i sqrt(6)
(-3+/-3 i sqrt(3))/4
+/- 1
+/-sqrt(6)
+/- 2/3 sqrt(3)
4
-3 +/- 3 i sqrt(3)
[S]
The only problems I need help with ae the last 8 ones, Thanks
Chapter 2 Solutions
ELEMENTARY LINEAR ALGEBRA-W/ACCESS
Ch. 2.1 - In Exercises 12, find all the minors and cofactors...Ch. 2.1 - In Exercises 12, find all the minors and cofactors...Ch. 2.1 - Let A=[41160033410144132] Find a. M13 and C13 b....Ch. 2.1 - Let A=[2311320332103214] Find a. M32 and C32 b....Ch. 2.1 - In Exercises 58, evaluate the determinant of the...Ch. 2.1 - In Exercises 58, evaluate the determinant of the...Ch. 2.1 - In Exercises 58, evaluate the determinant of the...Ch. 2.1 - In Exercises 58, evaluate the determinant of the...Ch. 2.1 - In Exercises 914, use the arrow technique of...Ch. 2.1 - In Exercises 914, use the arrow technique of...
Ch. 2.1 - In Exercises 914, use the arrow technique of...Ch. 2.1 - In Exercises 914, use the arrow technique of...Ch. 2.1 - In Exercises 914, use the arrow technique of...Ch. 2.1 - In Exercises 914, use the arrow technique of...Ch. 2.1 - In Exercises 1518, find all values of for which...Ch. 2.1 - In Exercises 1518, find all values of for which...Ch. 2.1 - In Exercises 1518, find all values of for which...Ch. 2.1 - In Exercises 1518, find all values of for which...Ch. 2.1 - Evaluate the determinant in Exercise 13 by a...Ch. 2.1 - Evaluate the determinant in Exercise 12 by a...Ch. 2.1 - In Exercises 2126, evaluate det(A) by a cofactor...Ch. 2.1 - In Exercises 2126, evaluate det(A) by a cofactor...Ch. 2.1 - In Exercises 2126, evaluate det(A) by a cofactor...Ch. 2.1 - In Exercises 2126, evaluate det(A) by a cofactor...Ch. 2.1 - In Exercises 2126, evaluate det(A) by a cofactor...Ch. 2.1 - In Exercises 2126, evaluate det(A) by a cofactor...Ch. 2.1 - In Exercises 2732, evaluate the determinant of the...Ch. 2.1 - In Exercises 2732, evaluate the determinant of the...Ch. 2.1 - In Exercises 2732, evaluate the determinant of the...Ch. 2.1 - In Exercises 2732, evaluate the determinant of the...Ch. 2.1 - In Exercises 2732, evaluate the determinant of the...Ch. 2.1 - In Exercises 2732, evaluate the determinant of the...Ch. 2.1 - In each part, show that the value of the...Ch. 2.1 - Show that the matrices A=[ab0c]andB=[de0f] commute...Ch. 2.1 - By inspection, what is the relationship between...Ch. 2.1 - Show that det(A)=12|tr(A)1tr(A2)tr(A)| for every 2...Ch. 2.1 - What can you say about an nth-order determinant...Ch. 2.1 - What is the maximum number of zeros that a 3 3...Ch. 2.1 - Explain why the determinant of a matrix with...Ch. 2.1 - prove that (x1, y1), (x2, y2), and (x3, y3) are...Ch. 2.1 - Prove that the equation of the line through the...Ch. 2.1 - Prove that if A is upper triangular and Bij is the...Ch. 2.1 - A matrix in which the entries in each row (or in...Ch. 2.1 - In parts (a)(j) determine whether the statement is...Ch. 2.1 - In parts (a)( j) determine whether the statement...Ch. 2.1 - In parts (a)(j) determine whether the statement is...Ch. 2.1 - In parts (a)(j) determine whether the statement is...Ch. 2.1 - In parts (a)(j) determine whether the statement is...Ch. 2.1 - In parts (a)(j) determine whether the statement is...Ch. 2.1 - In parts (a)( j) determine whether the statement...Ch. 2.1 - In parts (a)(j) determine whether the statement is...Ch. 2.1 - In parts (a)(j) determine whether the statement is...Ch. 2.1 - In parts (a)(j) determine whether the statement is...Ch. 2.2 - In Exercises 14, verify that det(A) = det(AT)...Ch. 2.2 - In Exercises 14, verify that det(A) = det(AT)....Ch. 2.2 - In Exercises 14, verify that det(A) = det(AT)...Ch. 2.2 - In Exercises 14, verify that det(A) = det(AT)....Ch. 2.2 - In Exercises 58, find the determinant of the given...Ch. 2.2 - In Exercises 58, find the determinant of the given...Ch. 2.2 - In Exercises 58, find the determinant of the given...Ch. 2.2 - In Exercises 58, find the determinant of the given...Ch. 2.2 - In Exercises 914, evaluate the determinant of the...Ch. 2.2 - In Exercises 914, evaluate the determinant of the...Ch. 2.2 - In Exercises 914, evaluate the determinant of the...Ch. 2.2 - In Exercises 914, evaluate the determinant of the...Ch. 2.2 - In Exercises 914, evaluate the determinant of the...Ch. 2.2 - In Exercises 914, evaluate the determinant of the...Ch. 2.2 - In Exercises 1522, evaluate the determinant, given...Ch. 2.2 - In Exercises 1522, evaluate the determinant, given...Ch. 2.2 - In Exercises 1522, evaluate the determinant, given...Ch. 2.2 - In Exercises 1522, evaluate the determinant, given...Ch. 2.2 - In Exercises 1522, evaluate the determinant, given...Ch. 2.2 - In Exercises 1522, evaluate the determinant, given...Ch. 2.2 - In Exercises 1522, evaluate the determinant, given...Ch. 2.2 - In Exercises 1522, evaluate the determinant, given...Ch. 2.2 - Use row reduction to show that...Ch. 2.2 - Verify the formulas in parts (a) and (b) and then...Ch. 2.2 - In Exercises 2528, confirm the identities without...Ch. 2.2 - In Exercises 2528, confirm the identities without...Ch. 2.2 - In Exercises 2528, confirm the identities without...Ch. 2.2 - In Exercises 2528, confirm the identities without...Ch. 2.2 - In Exercises 2930, show that det (A) = 0 without...Ch. 2.2 - In Exercises 2930, show that det (A) = 0 without...Ch. 2.2 - It can be proved that if a square matrix M is...Ch. 2.2 - It can be proved that if a square matrix M is...Ch. 2.2 - Let A be an n n matrix, and let B be the matrix...Ch. 2.2 - Find the determinant of the following matrix....Ch. 2.2 - In parts (a)(f) determine whether the statement is...Ch. 2.2 - In parts (a)(f) determine whether the statement is...Ch. 2.2 - In parts (a)(f) determine whether the statement is...Ch. 2.2 - In parts (a)(f) determine whether the statement is...Ch. 2.2 - In parts (a)(f) determine whether the statement is...Ch. 2.2 - In parts (a)(f) determine whether the statement is...Ch. 2.3 - In Exercises 14, verify that det(kA) = kn det(A)....Ch. 2.3 - In Exercises 14, verify that det(kA) = kn det(A)....Ch. 2.3 - In Exercises 14, verify that det (kA) = kn det...Ch. 2.3 - In Exercises 14, verify that det (KA) = Kn det(A)....Ch. 2.3 - In Exercises 56, verify that det (AB) = det (BA)...Ch. 2.3 - In Exercises 56, verify that det(AB) = det(BA) and...Ch. 2.3 - In Exercises 714, use determinants to decide...Ch. 2.3 - In Exercises 714, use determinants to decide...Ch. 2.3 - In Exercises 714, use determinants to decide...Ch. 2.3 - In Exercises 714, use determinants to decide...Ch. 2.3 - In Exercises 714, use determinants to decide...Ch. 2.3 - In Exercises 714, use determinants to decide...Ch. 2.3 - In Exercises 714, use determinants to decide...Ch. 2.3 - In Exercises 714, use determinants to decide...Ch. 2.3 - In Exercises 1518, find the values of k for which...Ch. 2.3 - In Exercises 1518, find the values of k for which...Ch. 2.3 - In Exercises 1518, find the values of k for which...Ch. 2.3 - In Exercises 1518, find the values of k for which...Ch. 2.3 - In Exercises 1923, decide whether the matrix is...Ch. 2.3 - In Exercises 1923, decide whether the matrix is...Ch. 2.3 - In Exercises 1923, decide whether the matrix is...Ch. 2.3 - In Exercises 1923, decide whether the matrix is...Ch. 2.3 - In Exercises 1923, decide whether the matrix is...Ch. 2.3 - In Exercises 2429, solve by Cramers rule, where it...Ch. 2.3 - In Exercises 2429, solve by Cramers rule, where it...Ch. 2.3 - In Exercises 2429, solve by Cramers rule, where it...Ch. 2.3 - In Exercises 2429, solve by Cramers rule, where it...Ch. 2.3 - In Exercises 2429, solve by Cramers rule, where it...Ch. 2.3 - In Exercises 2429, solve by Cramers rule, where it...Ch. 2.3 - Show that the matrix A=[cossin0sincos0001] is...Ch. 2.3 - Use Cramers rule to solve for the unknown y...Ch. 2.3 - Let Ax = b be the system in Exercise 31 a. Solve...Ch. 2.3 - Let A=[abcdefghi] Assuming that det(A) = 7, find...Ch. 2.3 - In each part, find the determinant given that A is...Ch. 2.3 - In each part, find the determinant given that A is...Ch. 2.3 - Prove that a square matrix A is invertible if and...Ch. 2.3 - Prove that if A is a square matrix, then det(AT) =...Ch. 2.3 - Let Ax = b be a system of n linear equations in n...Ch. 2.3 - Prove that if det(A) = 1 and all the entries in A...Ch. 2.3 - In parts (a)(l) determine whether the statement is...Ch. 2.3 - In parts (a)(l) determine whether the statement is...Ch. 2.3 - In parts (a)(l) determine whether the statement is...Ch. 2.3 - In parts (a)(l) determine whether the statement is...Ch. 2.3 - In parts (a)(l) determine whether the statement is...Ch. 2.3 - In parts (a)(l) determine whether the statement is...Ch. 2.3 - In parts (a)(l) determine whether the statement is...Ch. 2.3 - In parts (a)(l) determine whether the statement is...Ch. 2.3 - In parts (a)(l) determine whether the statement is...Ch. 2.3 - In parts (a)(l) determine whether the statement is...Ch. 2.3 - In parts (a)(l) determine whether the statement is...Ch. 2.3 - Prob. 12TFCh. 2 - In Exercises 18, evaluate the determinant of the...Ch. 2 - In Exercises 18, evaluate the determinant of the...Ch. 2 - In Exercises 18, evaluate the determinant of the...Ch. 2 - In Exercises 18, evaluate the determinant of the...Ch. 2 - In Exercises 18, evaluate the determinant of the...Ch. 2 - In Exercises 18, evaluate the determinant of the...Ch. 2 - In Exercises 18, evaluate the determinant of the...Ch. 2 - In Exercises 18, evaluate the determinant of the...Ch. 2 - Evaluate the determinants in Exercises 36 by using...Ch. 2 - a. Construct a 4 4 matrix whose determinant is...Ch. 2 - Use the determinant to decide whether the matrices...Ch. 2 - Use the determinant to decide whether the matrices...Ch. 2 - In Exercises 1315, find the given determinant by...Ch. 2 - In Exercises 1315, find the given determinant by...Ch. 2 - In Exercises 1315, find the given determinant by...Ch. 2 - Solve for x. |x131x|=|1032x613x5|Ch. 2 - In Exercises 1724, use the adjoint method (Theorem...Ch. 2 - In Exercises 1724, use the adjoint method (Theorem...Ch. 2 - In Exercises 1724, use the adjoint method (Theorem...Ch. 2 - In Exercises 1724, use the adjoint method (Theorem...Ch. 2 - In Exercises 1724, use the adjoint method (Theorem...Ch. 2 - In Exercises 1724, use the adjoint method (Theorem...Ch. 2 - In Exercises 1724, use the adjoint method (Theorem...Ch. 2 - In Exercises 1724, use the adjoint method (Theorem...Ch. 2 - Use Cramers rule to solve for x and y in terms of...Ch. 2 - Use Cramers rule to solve for x and y in terms of...Ch. 2 - By examining the determinant of the coefficient...Ch. 2 - Let A be a 3 3 matrix, each of whose entries is 1...Ch. 2 - a. For the triangle in the accompanying figure,...Ch. 2 - Use determinants to show that for all real values...Ch. 2 - Prove: If A is invertible, then adj(A) is...Ch. 2 - Prove: If A is an n n matrix, then...Ch. 2 - Prove: If the entries in each row of an n n...Ch. 2 - a. In the accompanying figure, the area of the...Ch. 2 - Use the fact that 21375, 38798, 34162, 40223,...Ch. 2 - Without directly evaluating the determinant, show...
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