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 + i y)1/3 = 2 + 3 i, then 3 x + 2 y is equal to
-20
-60
-120
60
The imaginary part of is
4/5
0
2/5
-(4/5)
If Z is a complex number such that , then
z is purely real
z is purely imaginary
z is any complex number
real part of z is the same as its imaginary part
Express in the standard form a+i b:
1-3 i
1+ 3 i
-1-3 i
None of these
The complex conjugate of 2 + i√7 is
2 + √7
2 + i√7
2-i√7
2 ± i√3
The conjugate of a complex number is . Then, that complex number is
If Z1=2 + i, Z2 = 3 - 2 i and Z3 = -1/2 + √3/2 then the conjugate of z1z2 is
i
8 + i
8 - i
6 - i
The amplitude of is
π/3
π/4
2 π/3
π/6
Express in the standard form a+i b: ((-3+i) (4-2 i)
10+10 i
-10 -10 i
-10 + 10 i
