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Thread: Imaginary Numbers

  1. April 21st 2008, 04:47 PM #1
    ~berserk
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    Imaginary Numbers



    could someone please help
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  2. April 21st 2008, 04:58 PM #2
    mr fantastic
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    Quote Originally Posted by ~berserk View Post


    could someone please help
    3 \sqrt{5} i + \sqrt{5} i = 4 \sqrt{5} i ......!
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  3. April 21st 2008, 05:04 PM #3
    ~berserk
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    thanks, i kinda dropped the ball on that one but what about the other two?
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  4. April 21st 2008, 09:58 PM #4
    mr fantastic
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    Quote Originally Posted by ~berserk View Post
    thanks, i kinda dropped the ball on that one but what about the other two?
    What about them? Are you trying to do? Simplify?

    3 \sqrt{-11} = 3 \sqrt{11} \, i. And that's it.

    -\sqrt{-\frac{1}{3}} = -\sqrt{\frac{1}{3}}\, i = - \frac{i}{\sqrt3} = - \frac{\sqrt{3} \, i}{3}.
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