Question # 1

A^-1 exists if A is:

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singular

nonsingular

symmetric

none

If A is a square matrix, then A - A^t is:

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The additive inverse of a matrix A is:

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A

A^-1

- A

A²

A matrix in which each element is 0 is called:

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If each element in any row or each element in any column of a square matrix is zero, then value of the determinant is:

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0

1

-1

none of these

For a square matrix A, |A| equals:

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A^t

|A^t|

-|A^t|

-A^t

If A is a matrix of order m × n and B is a matrix of order n × p then the order of AB is:

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p×m

p×n

n×p

m×p

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1

-5

-1

none

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3×2

2×3

2×2

3×3

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ab - cd = 0

ac - bd = 0

ad - bc = 1

ad - bc = 0

If A = [aij] and B = [bij] are two matrices of same order r × s, then order of A - B is:

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r - s

r × s

r + s

none of these

A matrix of order m×1 is called:

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row matrix

column matrix

identity matrix

scalar matrix

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