Multiplicative inverse of the non-zero complex number (x + iy), (x,y∈R) is
The complex number 1 + 2i/1 - i lies in
First quadrant
Second quadrant
Third quadrant
Fourth quadrant
is equal to __________
i
2 i
1 - i
2
If |z2 - 1| = |z|2 + 1, then z lies on
a circle
the imaginary axis
the real axis
an ellipse
The principal value of argument of 1 + i is
π/2
π/3
π/4
None of these
If 2x + (3x + y)i = 4 + 10i, then the value of x and y are
2,3
2,4
4,2
3,2
The reciprocal of 3 +i √7 i is
3/4 - √7/4 i
3 - √7 i
3/16 - √7/16 i
√7+3 i
The reciprocal of 3 + √7 i is
√7 + 3i
Which of the following is not applicable for a complex number ?
Addition
Subtraction
Division
Inequality
If n is any integer,then (i)n is
1,-1
i,-i
1,-1,i,-i
