Question # 1

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Hermitian matrix

Skew-hermitian matrix

Symmetric matrix

Identity matrix

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Null matrix

Triangular matrix

Unit matrix

Rectangular matrix

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2s²

2s³

s³

3s³

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2 x 2

2 x 3

3 x 2

3 x 3

If A is singular then |A| = ______

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1

0

2

None of these

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A²- 5A + 7I = 1

2A²- 3A + 7I = 0

A²- 5A + I = 0

A²- 5A + 7I = 0

If the matrices A and B are conformable for multiplication then (AB)^t= ______

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AB

A^tB^t

B^tA^t

A^tB

If order of A is m x n, then order of A^tis

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m x m

n x n

m x n

n x m

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(ABC)' =

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CBA'

CBA

C' B' A'

None of these

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1

0

3

-1

If the trace of matrix A is 5, then the trace of the matrix 3A is

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3/5

5/3

8

15

If A is a skew-symmetric matrix of order n and P, any square matrix of order n.prove that P' AP is

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Skew-symmetric

Symmetric

Null

Diagonal

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A^-

A^t

-A

A

Let A is a 3 x 3 matrix and B is its adjoint matrix. If |B| = 64, then |A| =

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If there are m rows and n columns in a matrix then its order is

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m x n

m x m

n x n

n x m

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(2x+a+b+c)

(a+b+c)

(a+b+c+x)

0

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Mathematics ECAT Pre Engineering Chapter 5 Matrices and Determinants Online Test MCQs With Answers

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