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Math Help - Imaginary Numbers

  1. #1
    Member ~berserk's Avatar
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    Imaginary Numbers



    could someone please help
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  2. #2
    Flow Master
    mr fantastic's Avatar
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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. #3
    Member ~berserk's Avatar
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    thanks, i kinda dropped the ball on that one but what about the other two?
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  4. #4
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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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