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The region represented by |z+a|+|z-a| lt...

The region represented by `|z+a|+|z-a| lt4a` is

A

`x^(2) + y^(2) lt 4a`

B

`x^(2) + y^(2) gt 4a^(2)`

C

`3x^(2) - 4y^(2) lt 4a^(2)`

D

`3x^(2) + 4y^(2) lt 12a^(2)`

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The correct Answer is:
D
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AAKASH SERIES-COMPLEX NUMBERS-PRACTICE EXERCISE
  1. If |z + barz| + |z - barz| , then the locus of z is

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  2. If |z + 4| + |z - 4| = 10 represents an ellipse then length of its min...

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  3. The region represented by |z+a|+|z-a| lt4a is

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  4. |z-4|lt|z-2| represents the region given by

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  5. For any two complex numbers z(1) & z(2) and any two real numbers a , b...

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  6. sqrt(-5+12i)=

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  7. sqrti =

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  8. The value of sqrt(x^(2) + 2ix- 1) is

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  9. If n is an integer and not a multiple of 3 then omega^(n) + omega^(2n...

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  10. (3 + 5 omega + 3omega^(2))^(6) =

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  11. (1+omega)(1+omega^(2))(1+omega^(5))..........2n factors =

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  12. (1- omega + omega^(2))^(7) + (1 + omega - omega^(2))^(7) =

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  13. (1-omega+omega^(2))(1-omega^(2)+omega^(4))(1-omega^(4)+omega^(8))(1-om...

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  14. If 1 , omega , omega^(2) are the cube roots of unity , then find the ...

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  15. If 1 , omega , omega^(2) are the cube roots of unity , then the root...

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  16. If 1 , omega , omega^(2) are the cube roots of unity, then prove that ...

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  17. The value of ((- 1 + isqrt3)/(2))^(100) + ((- 1 - isqrt3)/(2))^(100) i...

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  18. If x = a + b , y = a omega^(2) +b omega and z = a omega + b omega^(2) ...

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  19. If alpha , beta are the imaginary cube roots of unity then alpha^(4) +...

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  20. If 1 , omega , omega^(2) are the cube roots of unity , then (a+ b)^(3...

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