| 1 |
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| 2 |
The imaginary part of the complex number a + bi is: |
- A. a
- B. b
- C. bi
- D. none of these
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| 3 |
Conjugate of a + i b is: |
- A. -a + ib
- B. a + ib
- C. -a - ib
- D. a - ib
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| 4 |
The identity element with respect to addition is: |
- A. 0
- B. 1
- C. -1
- D. 0 and 1
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| 5 |
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| 6 |
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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| 7 |
The real part of the complex number a + bi is: |
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| 8 |
If z<sub>1</sub> = 4i and z<sub>2</sub> = 3 - 9i, then z<sub>1</sub> + z<sub>2</sub> = |
- A. 3 - 5i
- B. 3i - 5
- C. 7 - 9i
- D. 3 + 5i
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| 9 |
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- A. real numbers
- B. complexnumbers
- C. primenumbers
- D. oddnumbers
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| 10 |
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- A. z is purely real
- B. z is any complex number
- C. z is purely imaginary
- D. real part of z = imaginary part of z
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