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Math Help - complex plane

  1. #1
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    complex plane

    Write the complex number on (the polar) form r (cos& + i sin&) = re^i&, there i is the imaginar unit, and r and & is the absolute value of each argument. Illustrate then the
    century in the complex plane.

    -5i
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  2. #2
    MHF Contributor Also sprach Zarathustra's Avatar
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    Draw the point (0,-5).
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  3. #3
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    Quote Originally Posted by paulaa View Post
    Write the complex number on (the polar) form r (cos& + i sin&) = re^i&, there i is the imaginar unit, and r and & is the absolute value of each argument. Illustrate then the century in the complex plane. -5i
    Is there a question in all of that? If so, please state it clearly.
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  4. #4
    Member rtblue's Avatar
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    Whatever your question might be, this video should guide you towards a solution:

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