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Comples number transformations

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  1. Offline

    Here's the question

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    Here's my attempt

    Click image for larger version. 

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    If z is in imaginary axis, that's x=0, so if I take the bits I have highlighted in red, and set them to zero ... looks like a circle to me not a line?

    I must be doing something really stupid?
  2. Offline

    ... ok spotted problem !!


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