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3psilon

  • 3 years ago

If complex number z = 4-6i , then | z-2 | = ?

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  1. UnkleRhaukus
    • 3 years ago
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    |dw:1350784902834:dw|

  2. 3psilon
    • 3 years ago
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    I don't understand?

  3. UnkleRhaukus
    • 3 years ago
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    |dw:1350784964700:dw|

  4. 3psilon
    • 3 years ago
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    Why is it coordinates? I thought it meant absolute value?

  5. UnkleRhaukus
    • 3 years ago
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    |dw:1350785015499:dw|

  6. UnkleRhaukus
    • 3 years ago
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    the absolut value is the length of the vector

  7. 3psilon
    • 3 years ago
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    So it is just Square root of 36+16?

  8. UnkleRhaukus
    • 3 years ago
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    |dw:1350785068730:dw|

  9. 3psilon
    • 3 years ago
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    or 4 i mean

  10. UnkleRhaukus
    • 3 years ago
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    almost

  11. UnkleRhaukus
    • 3 years ago
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    the length of z is Square root of 36+16 but we want the length of z-2

  12. UnkleRhaukus
    • 3 years ago
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    yeah so how long is z-2?

  13. UnkleRhaukus
    • 3 years ago
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    (tha answer is an irrational number )

  14. anonymous
    • 3 years ago
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    i am a bit lost \(z=4-6i\) so \(z-2=2-6i\) pythagoras gives the length

  15. 3psilon
    • 3 years ago
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    Okay I got cha! Thanks @UnkleRhaukus !

  16. UnkleRhaukus
    • 3 years ago
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    what answer did you arrive at?

  17. 3psilon
    • 3 years ago
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    Root 40

  18. UnkleRhaukus
    • 3 years ago
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    good work, can you simplify √40?

  19. 3psilon
    • 3 years ago
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    2 root 10?

  20. UnkleRhaukus
    • 3 years ago
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    good show

  21. 3psilon
    • 3 years ago
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    :) thx a lot

  22. UnkleRhaukus
    • 3 years ago
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    if you can remember the distance formula as the square root of the sums of the squares of the differences of the corresponding coordinates , thats great, otherwise just draw the picture

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