rectangle
rhombus
trapezium
parallelogram
`2`
`3`
`4`
zero
`sqrt{2} [cos (-frac{ pi}{2})+i sin(-frac{pi}{2})]`
`sqrt{2} [cos (frac{3 pi}{2})+i sin(frac{3 pi}{2})]`
`sqrt{2} [cos (-frac{3 pi}{4})+i sin(-frac{3 pi}{4})]`
`sqrt{2} [cos (frac{ pi}{2})+i sin(frac{pi}{2})]`
`x ^ 2 -x+1=0`
`x ^ 2 +x+1=0`
` x ^ 2 +x-1=0`
`x ^ 2 -x-1=0`
`3`
`2`
`1`
`0`
`1`
`2`
`3`
`oo`
`3 sqrt(2) i`
`2 sqrt(2) i`
`4 sqrt(2) i`
None of these
`cos 2 n theta`
`sin 2 n theta`
`0`
`R-{0}`
`e^(-pi/4) cos (1/2 log 2)`
`-e^(-pi/4) sin (1/2 log 2)`
`e^(pi/4) cos (1/2 log 2)`
`e^(-pi/4) sin (1/2 log 2)`
a straight line
a point
a circle
a pair of straight line
` a = 1` alone
`a = 2` alone
for all values of a except `2`
for no value of `a`
`0`
`-1`
`1`
`i`
`z` is purely real
`z` is purely imaginary
`z = bar (z) =0`
`(z- bar (z))i` is purely imaginary
equal to 1
less than 1
greater than 1
equal to 3
`(z bar(z))` is purely imaginary
`(z. bar(z))` is non-negative real
`(z- bar(z))` is purely real
`(z + bar (z) )` is purely imaginary
`3 omega`
`3 omega (omega - 1)`
`3 omega^2`
`3 omega (1 - omega)`
` omega , omega^2`
` omega , omega^3`
` omega^2 , omega^3`
None of these
`(z_1 + z_2 +z_3)/3`
`(z_1 +z_2 +z_3)/2`
`z_1 + z_2 +z_3`
None of these