15. Solve the equation: x? + 81 = 0. А. (9) C. {-9i, 9i} В. (-9, 9) D.{9i}

Elementary Linear Algebra (MindTap Course List)
8th Edition
ISBN:9781305658004
Author:Ron Larson
Publisher:Ron Larson
Chapter3: Determinants
Section3.1: The Determinants Of A Matrix
Problem 70E: The determinant of a 22 matrix involves two products. The determinant of a 33 matrix involves six...
icon
Related questions
Question
7.
Which of the following matrices has a determinant of 1?
1 0
В.
1
A.
С.
D.
1
1
1
8. Solve the system of equations:
4A — В + 3С - 12;
2A + 9C = -5; and A + 4B + 6C = -32.
А. (2, 7, -1)
В. (2, 7, 1)
у —4
С. (2, -7, 1)
D. (2, -7, -1)
2w – 3
9. Solve the system of equations: x - y + 3z = -8; 2x + z = 0;
and x + 5y + z = 40.
А. (-8, 0, 0)
С. (0, -8, -8)
В. (0, -8, 0)
D. (8, 8, 0)
and
1
10. -9
A. V3 i
В. Зі
С.-3 і
D. -V3 i
11. (5 – 6 i) + (9 + 9 i)
A. 14 + 3 i
С.-14 — 3і
В. 14 — 3і
D. -4 + 15 i
12. (7 + V-4) (4 + v=64)
A. 108 i
С. 12 + 64i
В. 108
D. 284 + 464i
13. (8 — 6 1)(-5 — 3 і)
А. — 22 — 54i
С.-58 — 54i
В. — 22 + 6і
D. -58 + 6 i
10i
14. Divide and express the result in standard form:
3+i
А. —1 + 3i
С.1 — 3і
B. 1 + 10i
D. 1 + 3 i
15. Solve the equation: x? + 81 = 0.
A. (9}
С. (-91, 9i)
В. (-9, 9}
D.{9i}
Transcribed Image Text:7. Which of the following matrices has a determinant of 1? 1 0 В. 1 A. С. D. 1 1 1 8. Solve the system of equations: 4A — В + 3С - 12; 2A + 9C = -5; and A + 4B + 6C = -32. А. (2, 7, -1) В. (2, 7, 1) у —4 С. (2, -7, 1) D. (2, -7, -1) 2w – 3 9. Solve the system of equations: x - y + 3z = -8; 2x + z = 0; and x + 5y + z = 40. А. (-8, 0, 0) С. (0, -8, -8) В. (0, -8, 0) D. (8, 8, 0) and 1 10. -9 A. V3 i В. Зі С.-3 і D. -V3 i 11. (5 – 6 i) + (9 + 9 i) A. 14 + 3 i С.-14 — 3і В. 14 — 3і D. -4 + 15 i 12. (7 + V-4) (4 + v=64) A. 108 i С. 12 + 64i В. 108 D. 284 + 464i 13. (8 — 6 1)(-5 — 3 і) А. — 22 — 54i С.-58 — 54i В. — 22 + 6і D. -58 + 6 i 10i 14. Divide and express the result in standard form: 3+i А. —1 + 3i С.1 — 3і B. 1 + 10i D. 1 + 3 i 15. Solve the equation: x? + 81 = 0. A. (9} С. (-91, 9i) В. (-9, 9} D.{9i}
Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer
Similar questions
Recommended textbooks for you
Elementary Linear Algebra (MindTap Course List)
Elementary Linear Algebra (MindTap Course List)
Algebra
ISBN:
9781305658004
Author:
Ron Larson
Publisher:
Cengage Learning
Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
Algebra
ISBN:
9781133382119
Author:
Swokowski
Publisher:
Cengage
Linear Algebra: A Modern Introduction
Linear Algebra: A Modern Introduction
Algebra
ISBN:
9781285463247
Author:
David Poole
Publisher:
Cengage Learning
College Algebra
College Algebra
Algebra
ISBN:
9781938168383
Author:
Jay Abramson
Publisher:
OpenStax
Algebra for College Students
Algebra for College Students
Algebra
ISBN:
9781285195780
Author:
Jerome E. Kaufmann, Karen L. Schwitters
Publisher:
Cengage Learning
College Algebra
College Algebra
Algebra
ISBN:
9781337282291
Author:
Ron Larson
Publisher:
Cengage Learning