is equal to __________
i
2 i
1 - i
2
If n is any integer,then (i)n is
1,-1
i,-i
1,-1,i,-i
z z¯= 0 iff
Re(z) = 0
Im(z) = 0
z = 0
None of these
The principal value of argument of 1 + i is
π/2
π/3
π/4
If 2x + (3x + y)i = 4 + 10i, then the value of x and y are
2,3
2,4
4,2
3,2
Multiplicative inverse of the non-zero complex number (x + iy), (x,y∈R) is
(3 + 2i)(4 + 5i) =
7 + 7i
7-7i
2+23i
2-23i
The complex number 1 + 2i/1 - i lies in
First quadrant
Second quadrant
Third quadrant
Fourth quadrant
Which of the following is not applicable for a complex number ?
Addition
Subtraction
Division
Inequality
Determine x and y for which 2x + 3yi = 2+ 9i
x = 1, y = 3
x = 3, y = 1
x = 2, y = 1
x = 1, y = 2