1 |
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A is superset of B
B is superset of A
A is subset of B
A is equivalent to B
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2 |
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3 |
|
0
i
-i
1
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4 |
If z = x + i y = r (cos Θ + i sin Θ), then arg z is: |
tan Θ
cos<sup>2</sup>Θ + sin<sup>2</sup>Θ
r
Θ
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5 |
Factors of x2 + y2 are: |
(x + iy) (x - iy)
(x + y) (x - y)
(x + y) (x + y)
none
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6 |
Which of the following is correct: |
2 + 7i > 10 + i
1 + i > 1 - i
4 + 3i > 1 + 3i
none of these
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7 |
|
i
0
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8 |
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x = 0, y = 0
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9 |
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z is purely real
z is any complex number
z is purely imaginary
real part of z = imaginary part of z
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10 |
tan-1(-√3) is: |
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11 |
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12 |
cos(tan-1∞) = |
0
∞
1
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13 |
tan(π + cot-1x ) = |
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14 |
tan(π + tan-1x ) = |
x
π+x
π-x
none of these
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15 |
cos (2sin-1 x) = |
1- 2x<sup>2</sup>
1 + 2x<sup>2</sup>
2x<sup>2</sup>- 1
x<sup>2</sup>- 1
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16 |
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0
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17 |
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18 |
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19 |
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20 |
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