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about to only mathematics...

about to only mathematics

A

The X-axis

B

The line y=5

C

A circle through the origin

D

None of these

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The correct Answer is:
A
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VMC MODULES ENGLISH-COMPLEX NUMBERS -LEVEL - 1
  1. If Re ((z + 2i)/(z+4))= 0 then z lies on a circle with centre :

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  2. If z is a complex number satisfying the relation |z+ 1|=z+2(1+i), then...

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  3. The number of solutions of z^3+ z =0 is (a) 2 (b) 3 (c) 4 (d) 5

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  4. If z= costheta+isintheta , then the value of (z^(2n)-1)/(z^(2n)+1) ...

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  5. If f(x)=x^(4)-8x^(3)+4x^(2) +39 and f(3+2i)=a+ib then a:b equals

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  6. If z and bar z represent adjacent vertices of a regular polygon of n s...

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  7. If z=-2+2sqrt(3)i, then z^(2n)+2^(2n)*z^n+2^(4n) is equal to

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  8. if Im((z+2i)/(z+2))= 0 then z lies on the curve :

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  9. about to only mathematics

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  10. about to only mathematics

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  11. The locus represented by |z-1|=|z+i| is:

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  12. If the imaginary part of (2z+1)//(i z+1) is -2, then find the locus of...

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  13. If for the complex numbers z1 and z2, |z1+z2|=|z1-z2|, then Arg(z1)-...

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  14. The complex number z(1),z(2),z(3) are the vertices A, B, C of a parall...

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  15. If z = x + iotay and amp((z-1)/(z+1)) = pi/3 , then locus of z is

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  16. If all the roots of z^3+az^2+bz+c=0 are of unit modulus, then (A) |a|l...

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  17. If pi/2 < alpha < 3pi/2 then the modulus argument of (1+cos 2alpha)+i ...

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  18. If a=cos""(4pi)/(3)+isin""(4pi)/(3), then the value of ((1+a)/(2))^(3n...

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  19. Locus of the pont z satisfying the equation|z-1|+|z-1|=2, is (where,i=...

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  20. If center of a regular hexagon is at the origin and one of the vertice...

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