The product of three cube roots of unity is
1
-1
0
ω2
i is equal to
Greater than 0
Less than 0
None of the above three
i38 =
-i
i
Find the modulus of ( 3 + 4i) ( 4+i)
5√17
√17
2√17
3√17
The additive inverse of -2 + 3 i is
2 + 3 i
-2 -3 i
2 - 3 i
-2 + 3 i
The conjugate of (6 + 5i)2 is
11 - 60 i
- 11 - 60 i
11 + 60 i
- 11 + 60 i
(3i)(4i) =
12
-12
12i
12/i
7
7 i
-7
- 7i
The values of x and y, if 2x + 4i y = -i3 x - y + 3 are
1/3, 4/3
4/3, 1/3
2/3, 1/3
1/3, 2/3
If conjugate and reciprocal of a complex number z = x + iy are equal , then
x + y = 1
x2 + y2 = 1
x = 1 and y = 0
x = 0 and y = 1
