Q.2 Which of the following matrices are symmetric and skew-symmetric 6. (i) 6 -2 3 ol [a b c (ii) b d e e fl -51 -6 6 [2 71 (iii) 5 3 Lc 1-3

Elementary Linear Algebra (MindTap Course List)
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Chapter2: Matrices
Section2.3: The Inverse Of A Matrix
Problem 79E: Let A,D, and P be nn matrices satisfying AP=PD. Assume that P is nonsingular and solve this for A....
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Q.2 Which of the following matrices are symmetric and skew-symmetric
[a b c
(ii) b d e
6.
71
(i) 6 -2 3
17
-51
(iii)| 5 -6
6
Lc
e fl
-3
Q.3 Find the inverse if it exists, of the following matrices
2 31
(iv)-1 0 4
2 2]
2 -1
[2 -2
(ii) 4
15
3
1
1
-3 (iii)-3 4
5
-4 2
6.
Q.4 Find the solution set of the following system by means of matrices:
2x - 3y = -1
(i)
x + 4y 5
x +y = 2
(ii) 2x – z = 1
2y - 3z -1
x - 2y +z = -1
(iii) 3x +y- 2z = 4
y - z = 1
x + y - 2z = 3
- 4x + 2y - 9z = 2
(iv) 3x + 4y + z = 5
(v) 3x - y +z 0
x - 3y + 2z = 8
3x + 3y - 6z = 8
Transcribed Image Text:Q.2 Which of the following matrices are symmetric and skew-symmetric [a b c (ii) b d e 6. 71 (i) 6 -2 3 17 -51 (iii)| 5 -6 6 Lc e fl -3 Q.3 Find the inverse if it exists, of the following matrices 2 31 (iv)-1 0 4 2 2] 2 -1 [2 -2 (ii) 4 15 3 1 1 -3 (iii)-3 4 5 -4 2 6. Q.4 Find the solution set of the following system by means of matrices: 2x - 3y = -1 (i) x + 4y 5 x +y = 2 (ii) 2x – z = 1 2y - 3z -1 x - 2y +z = -1 (iii) 3x +y- 2z = 4 y - z = 1 x + y - 2z = 3 - 4x + 2y - 9z = 2 (iv) 3x + 4y + z = 5 (v) 3x - y +z 0 x - 3y + 2z = 8 3x + 3y - 6z = 8
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