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2 |
If A and B are two matrices, then: |
- A. A B = O
- B. AB = BA
- C. AB = I
- D. AB may not be defined
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3 |
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4 |
The additive inverse of a matrix A is: |
- A. A
- B. A<sup>-1</sup>
- C. - A
- D. A<sup>2</sup>
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5 |
If AB = BA = I, then A and B are: |
- A. equal to each other
- B. multiplicative inverse of each other
- C. additive inverse of each other
- D. both singular
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6 |
If A is non singular matrix then A<sup>t</sup> is: |
- A. singular
- B. nonsingular
- C. symmetric
- D. none
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7 |
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8 |
A matrix of order m×1 is called: |
- A. row matrix
- B. column matrix
- C. identity matrix
- D. scalar matrix
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9 |
If any two rows of a square matrix are interchanged, the determinant of the resulting matrix: |
- A. is zero
- B. is multiplicative inverse of the determinant of the original matrix
- C. is additive inverse of the determinant the original matrix
- D. none of these
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10 |
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- A. 3×3
- B. 3×2
- C. 2×1
- D. 2×3
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