| 1 |
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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| 2 |
[0] is a: |
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| 3 |
A<sup>-1</sup> exists if A is: |
- A. singular
- B. nonsingular
- C. symmetric
- D. none
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| 4 |
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- A. 3×1<!--[if gte msEquation 12]><m:oMathPara><m:oMath><m:d><m:dPr><m:begChr
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- B. 1×3
- C. 3×3
- D. 1×1
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| 5 |
If A is a square matrix order 3 × 3 the |kA| equals: |
- A. k |A|
- B. k<sup>2</sup>|A|
- C. k<sup>3</sup> |A|
- D. k<sup>4</sup> |A|
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| 6 |
If A is a square matrix, then: |
- A. |A<sup>t</sup>| = A
- B. |A<sup>t</sup>| = -A
- C. |A<sup>t</sup>| = |A|
- D. A<sup>t</sup>= A
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| 7 |
A matrix in which each element is 0 is called: |
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| 8 |
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| 9 |
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- A. scalar matrix
- B. diagonalmatrix
- C. lower triangularmatrix
- D. upper triangularmatrix
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| 10 |
|
- A. 25
- B. 20
- C. 40
- D. 2a + 2b + 2c
|