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anonymous

  • 5 years ago

Find the vector v, and its magnitude is 5. v is orthogonal to x axis, and the dot product v.w = 6, and the vector w=i+2j.

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  1. anonymous
    • 5 years ago
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    v.w=|v||w|cos theta

  2. amistre64
    • 5 years ago
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    a vetor that is perpendicular to the x axis with a magnitude of 5 is <0,5>

  3. amistre64
    • 5 years ago
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    is this vector in R^3?

  4. myininaya
    • 5 years ago
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    does v have ai+bj form or does v have ai+bj+ck form?

  5. myininaya
    • 5 years ago
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    2 dimensions or 3?

  6. amistre64
    • 5 years ago
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    if w=<1,2>....... v.w = (1.0)+(5.2) = 10...not 6

  7. amistre64
    • 5 years ago
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    the question makes no sense...

  8. amistre64
    • 5 years ago
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    (1.0)+(2.3) = 6 but then v =<0,3> with a magnitude of 3

  9. anonymous
    • 5 years ago
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    the answer is <0,3,4>

  10. amistre64
    • 5 years ago
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    the answer is...... clarify the question lol

  11. myininaya
    • 5 years ago
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    i got what amistre got

  12. myininaya
    • 5 years ago
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    a condradiction

  13. amistre64
    • 5 years ago
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    find the real roots of x^2 +9

  14. anonymous
    • 5 years ago
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    but i dont understand how he got the number 4 in the answer

  15. amistre64
    • 5 years ago
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    oh..by the way; when i say real rots i mean complex lol

  16. myininaya
    • 5 years ago
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    ok so we are looking at 3 dimensions not 2

  17. amistre64
    • 5 years ago
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    <1,2,0> <0,3,4> -------- 6...yes

  18. amistre64
    • 5 years ago
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    so....<0,3> is what it looks like when staring at it from the xy plane

  19. amistre64
    • 5 years ago
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    0^2 +3^2 +z^2 = |v|^2

  20. amistre64
    • 5 years ago
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    9+z^2 = 5^2 z^2 = 25 - 6 z = sqrt(16) = 4

  21. amistre64
    • 5 years ago
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    -6 means -9 :)

  22. myininaya
    • 5 years ago
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    thats what I did :)

  23. amistre64
    • 5 years ago
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    lol..its like haveing a parrot :)

  24. anonymous
    • 5 years ago
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    hey, may you type in the word and send me?

  25. amistre64
    • 5 years ago
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    just copy it off of here and put it in a text editor.. like SWord or notepad

  26. amistre64
    • 5 years ago
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    ....my shift keys are on the fritz...

  27. myininaya
    • 5 years ago
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  28. anonymous
    • 5 years ago
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    Thanks a lot

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