Answered: 12x-3[-¹2 21-1²31² 4. What is x in the… | bartleby

Algebra & Trigonometry with Analytic Geometry

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter11: Topics From Analytic Geometry

Section: Chapter Questions

Problem 12RE

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Question

4. What is x in the equation 2x - 3[_1²2 21-1²2 31²
5. Let A = [3-2i 4i 1 + 6i], and B =[5+ i 2-3i 5]. Find (1-2i) A+ (3 + i) B.
6. Given A =
[3-5i
16+7i
2+4i]
1+8i
find the conjugate of its transpose.
9
7. Given: x + 3y - 2z= 4; 2x + z = -3; and 2y + 3z = -1
What is the value of x + y + z?
8. Find x and B, if B =[2x-3x+1
4
is symmetric.
9. Find (2 + 3i) A if A=
[2-31 5+8]
-4 3-71
-6-i 5i
10. If A is an n x n matrix, which of the following is not true? Use a 2x2 matrix (not a special
type) to verify.
A. AAT and ATA are symmetric.
C. A + AT is symmetric.
B. A A¹ is symmetric.
D. AAT is skew symmetric.

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