| 1 |
I3 x | I<sub>3</sub> | = ? |
- A. I<sub>3</sub>
- B. 0
- C. 1
- D. None of these
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| 2 |
Any matrix "A" is a symmetric matrix if |
- A. A = A
- B. A = A<sup>t</sup>
- C. A = -A<sup>t</sup>
- D. A = A-I
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| 3 |
Any matrix "A" is a symmetric matrix if: |
- A. A = -A
- B. A = A<sup>t</sup>
- C. A = -A<sup>t</sup>
- D. A = A<sup>-t</sup>
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| 4 |
If A is a singular matrix then: |
- A. A = 0
- B. |A| = 0
- C. A ≠ 0
- D. |A| ≠ 0
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| 5 |
If Ax = B then x is |
- A. BA<sup>-1</sup>
- B. AB
- C. B/A
- D. A<sup>-1</sup> B
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| 6 |
|
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| 7 |
If A = [aij], then A+ is : |
- A. [aij]
- B. [bji]
- C. [aji]
- D. [aii]
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| 8 |
We cannot find the inverse of a:<br> |
- A. Square matrix
- B. Diagonal matrix
- C. Triangular matrix
- D. Singular matrix
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| 9 |
A + 0 is equal to: |
- A. 0
- B. A
- C. O + A
- D. None of these
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| 10 |
A square matrix whose elements below the main diagonal are all zero is called. |
- A. Upper triangular matrix
- B. Lower triangular matrix
- C. Rectangular
- D. Row matrix
|