The complex number when represented in the Argand diagram is
In the second quadrant
In the first quadrant
On the Y- axis
On the X- axis
If α and β are different complex numbers with |β| = 1 then is
0
3/2
1/2
1
Write 3-√-7 as complex number
3 + i√-7
3-i√7
-3+i √7
-3-i √7
The conjugate of a complex number is . Then, that complex number is
The modulus of -2 + 4 i is
5√2
5/√2
2√5
√5
Find the real and imaginary part of (2+i) (3-2 i)
8,1
-8,1
8,-1
-8,-1
If z is a complex number such that Re(z) = Im (z), then
Re (Z2) = 0
Im (z2) = 0
Re (z2) = Im (z2)
z2 = 0
If x = 3 + i, then x3 - 3 x2 - 8 x + 15 is equal to
6
10
45
-15
If (x + i y)1/3 = 2 + 3 i, then 3 x + 2 y is equal to
-20
-60
-120
60
If distance between directrices of a rectangular hyperbola is 10, then distance between its foci will be
10√2
5
20
