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The conjugate of a complex number is (1)...

The conjugate of a complex number is `(1)/(i-2)`. Then, the complex number is

A

`(1)/(i+2)`

B

`(-1)/(i+2)`

C

`(-1)/(i-2)`

D

`(1)/(i-2)`

Text Solution

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The correct Answer is:
B
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PREMIERS PUBLISHERS-COMPLEX NUMBERS-Solution to Exercise 2.9
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  3. The conjugate of a complex number is (1)/(i-2). Then, the complex numb...

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  5. If z is non zero complex number, such that 2i z^(2) = bar(z),then |z| ...

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  6. If |z-2 + i|le2, then the greatest value of |z| is

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  7. If |z - (3)/(z)| = 2, then the least value of |z| is

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  8. If |z| = 1, then the value of (1+z)/(1 +bar(z)).

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  9. The solution of the equation |z| -z = 1 + 2i is

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  10. If |z(1)| = 1, |z(2)| = 2, |z(3)| = 3 and |9z(1)z(2) + 4z(1) z(3) + z(...

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  12. z(1), z(3), and z(3) are complex numbers such that z(1) + z(2) + z(3)=...

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  13. If (z - 1)/(z + 1) is purely imaginary, then |z| is

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  14. If z = x + iy is a complex number such that |z + 2| = |z - 2|, then th...

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  15. The principal argument of (3)/(-1 + i) is

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  16. The principal argument of (sin 40^(@) + i cos 40^(@))^(5) is

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  17. If (1 + i)(1 + 2i)(1 + 3i)….(1 + ni) = x + iy, then 2.5.10…(1 + n^(2))...

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