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destinie

  • one year ago

how do i draw a vector function of <3sint, cost> ?

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  1. itsmylife
    • one year ago
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    are you using MATLAB?

  2. destinie
    • one year ago
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    what's MATLAB?

  3. itsmylife
    • one year ago
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    if your in college you must be knowing that, its a software for solving everything :) known as MATRIX lab or matlab and your vector function could have been drawn on that easily

  4. destinie
    • one year ago
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    Oh. well this is my first math class since high school, and im having trouble remembering everything and my book isnt doing me much justice..so how do i get there?

  5. itsmylife
    • one year ago
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    i guess phasor diagram can be plotted of the function that you have given but vector function is kinda complex :/ to draw , you gotta use software

  6. destinie
    • one year ago
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    but i have to draw it on paper...

  7. itsmylife
    • one year ago
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    are you a math major?

  8. destinie
    • one year ago
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    supposedly...now im not so sure...i cant even comprehend calc 3

  9. itsmylife
    • one year ago
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    don't worry you can go through that i've forgotten this, lemme see how much i can do here :/

  10. destinie
    • one year ago
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    okay thanks! like i dont even know where to begin..

  11. itsmylife
    • one year ago
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    got it, just use different values of t and put it in your function, you can draw vector function easily, lets say at t=30 degrees ,find value of 3 sint which is = 3 * 1/2 and value of cos t = cos 30 = sqrt 3/ 2 so you got a pair that is \[(\frac{ 3 }{ 2 }, \frac{ \sqrt 3 }{ 2 } )\] similarly find value of your function at lets say t=45 your gona get 3 sin t = 3 sin 45 = 3/ sqrt 2 and cos 45 = 1/ sqrt 2 \[(\frac{ 3 }{ \sqrt2 }, \frac{ 1 }{ \sqrt2 })\] now just plot it on graph paper ;)

  12. itsmylife
    • one year ago
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    did you get this ? @destinie

  13. destinie
    • one year ago
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    yes im trying to decipher and make sense of it but thank you sooooo much!

  14. destinie
    • one year ago
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    yeah i think i understand how to plot them, but since they are a vector function, isnt it supposed to be a vector? or do i plot them and then thats the vector? and i attend IUS lol nice to meet you!

  15. itsmylife
    • one year ago
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    |dw:1358912629689:dw| the line that i have shown by arrow is the only line just find out values at t= pi/4, pi/2 and pi finally you are done ;)

  16. destinie
    • one year ago
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    thank you so much! ur a life savor

  17. itsmylife
    • one year ago
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    your welcome :)

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