Matrices and Determinants – Exercise – 1

11. if A =

2016-07-28_20-03-41

then 3A is :

(a) 2016-07-28_20-05-20
(b) 2016-07-28_20-09-15

(c) 2016-07-28_20-07-18

(d) 2016-07-28_20-10-28

Answer
Answer : (a)
Explanation
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12. This matrix is a _______ .

2016-07-28_20-24-07

(a) unit matrix
(b) null matrix
(c) triangular matrix
(d) rectangularmatrix

Answer
Answer : (a)
Explanation
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13. if A =

2016-07-28_20-03-41

then |A| is :

(a) 0
(b) 1
(c) 2
(d) -2

Answer
Answer : (d)
Explanation
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14. This matrix is a _______ .

2016-07-28_20-32-49

(a) null matrix
(b) zero matrix
(c) scalar matrix
(d) column matrix

Answer
Answer : (d)
Explanation
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15. Matrices are represented by :

(a) small letters
(b) real numbers
(c) capital letters
(d) natural numbers

Answer
Answer : (c)
Explanation
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