| 1 |
Multiplicative inverse of -i is: |
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| 2 |
The multiplicative invers of a non-zero real number a is: |
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| 3 |
The multiplicative identity of real numbers is: |
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| 4 |
Product of a complex number and its conjugate is: |
- A. a real number
- B. irrationalnumber
- C. a complexnumber
- D. either real number or complexnumber
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| 5 |
Zero is: |
- A. a natural number
- B. a whole number
- C. a positive integer
- D. a negativeinteger
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| 6 |
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| 7 |
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- A. additive property
- B. multiplicative inverseproperty
- C. transitive property
- D. negative property
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| 8 |
The ordered pairs (2, 5) and (5, 2) are: |
- A. not equal
- B. equal
- C. disjoint
- D. empty
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| 9 |
If z = x + i y = r (cos Θ + i sin Θ), then arg z is: |
- A. tan Θ
- B. cos<sup>2</sup>Θ + sin<sup>2</sup>Θ
- C. r
- D. Θ
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| 10 |
Factors of x<sup>2</sup> + y<sup>2</sup> are: |
- A. (x + iy) (x - iy)
- B. (x + y) (x - y)
- C. (x + y) (x + y)
- D. none
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