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Babynini
 one year ago
Vectors, please check :)
Babynini
 one year ago
Vectors, please check :)

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Babynini
 one year ago
Best ResponseYou've already chosen the best response.1A few simple questions! u= <2,4> v=5i3i 1) find 6uv = <17,21> 2) fine a unit vector in the direction of v this one i'm ont sure about 3) graph u, v, and uv with initial points of origin. again, i have an idea but im not sure

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1look there is a typo ``` v=5i3i ```

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1u= <2, 4> v=5i3j = <5, 3> 6u  v = ?

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1can you show work for how you got 21 ?

Babynini
 one year ago
Best ResponseYou've already chosen the best response.16u = <12,24> v= <5,3> (125), (243) = <17,21>

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1is it 243 or 24(3) ?

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1what do u know about unit vector ?

Babynini
 one year ago
Best ResponseYou've already chosen the best response.1er, is this where I use cos and sin?

Babynini
 one year ago
Best ResponseYou've already chosen the best response.1or multiplying by scalar?

Babynini
 one year ago
Best ResponseYou've already chosen the best response.1It's the angle formed by the vector and x.

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1unit vector is just a vector whose magnitude is 1 and points in the same direction

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1what is the magnitude of vector v ?

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1yes what do you need to do to make it 1 ?

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1what do you need to do to \(\sqrt{25+9}\) to make it \(1\) ?

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1dividing by \(\sqrt{25+9}\) produces \(1\), yes ?

Babynini
 one year ago
Best ResponseYou've already chosen the best response.1yeah dividing it by itself

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1so the unit vector is simply : \[\large \dfrac{v}{\v\}\]

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1dividing the original vector by its magnitude gives the unit vector

Babynini
 one year ago
Best ResponseYou've already chosen the best response.1\[\frac{ 5i 3j}{ \sqrt{34} }\]

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1Yes thats the unit vector in the direction of \(v\)

Babynini
 one year ago
Best ResponseYou've already chosen the best response.1so that would be the final answer? :)

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1dw:1433398194050:dw

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1To graph the vector u= <2,4> first plot the point (2, 4) and draw an arrow from (0,0) to (2,4)

Babynini
 one year ago
Best ResponseYou've already chosen the best response.1dw:1433398294843:dw

Babynini
 one year ago
Best ResponseYou've already chosen the best response.1(7,7) isn't on the graph :P

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1dw:1433398431757:dw

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1yeah uv = <7, 7> is not on this graph but i see you get how to draw the vectors

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1don't forget to put arrow at the final point
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