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Complex numbers watch

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    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
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    (Original post by shady2.0)
    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?
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    (Original post by Muttley79)
    What have you got so far?
    I really dont understand the question
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    (Original post by shady2.0)
    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
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    (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
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    (Original post by shady2.0)
    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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