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# Complex numbers watch

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1. Solve this question for me please
the complex number z and 2-i are represented in the complex plane by the points Z and C respectively.Z moves so that 3<|z-2+i|<4.Indicate the region of the plane to which Z is restricted
Solve this question for me please
the complex number z and 2-i are represented in the complex plane by the points Z and C respectively.Z moves so that 3<|z-2+i|<4.Indicate the region of the plane to which Z is restricted
What have you got so far?
3. (Original post by Muttley79)
What have you got so far?
I really dont understand the question
I really dont understand the question
Have you done loci with complex numbers?

Look at the theory first - forum guidelines don't allow solutions to be posted.

Try something like this:

http://www.examsolutions.net/maths-r...cle/circle.php
5. (Original post by Muttley79)
Have you done loci with complex numbers?

Look at the theory first - forum guidelines don't allow solutions to be posted.

Try something like this:

http://www.examsolutions.net/maths-r...cle/circle.php
well okay thanks let me check on it
Solve this question for me please
the complex number z and 2-i are represented in the complex plane by the points Z and C respectively.Z moves so that 3<|z-2+i|<4.Indicate the region of the plane to which Z is restricted
Basically it is saying that a point (z) from the point 2-i is a distance of between 3 and 4, so it should be between two concentric circles with radii 3 and 4.
This should clear up the question

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Updated: November 12, 2015
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