IsTim
  • IsTim
Given each scalar equation, write a vector equation. x=8
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
IsTim
  • IsTim
I was thinking that the normal vector was [8,0] and that the direction vector was [0,-8] and the position vector was [8,0].
IsTim
  • IsTim
I was wrong.
IsTim
  • IsTim
My final answer was [x,y]=[8,0]+t[0,-8]. But I am wrong.

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IsTim
  • IsTim
MYsesshou, are you my savior in this dark time?
IsTim
  • IsTim
Assassin, are you able to assist me?
mysesshou
  • mysesshou
Actually, I'm not quite sure. Sorry !! Sorry for lag. I have been fighting my computer and this site for like an hour.
IsTim
  • IsTim
I think everyone has. Ok. Oh well.
mysesshou
  • mysesshou
was that the only info you're given?
IsTim
  • IsTim
Yes. Alongside the info in the textbook explaining how to do this.
mysesshou
  • mysesshou
I'm still searching, but can you apply something like this? http://www.blurtit.com/q1900770.html (google'd) I don't have your book... is it a calc book?
IsTim
  • IsTim
I dunno. Yes, it is a Calculus and Vectors book.
IsTim
  • IsTim
Are you able to help?
mysesshou
  • mysesshou
Probably not, but I've been searching
IsTim
  • IsTim
I'll rally up others just in case.
mysesshou
  • mysesshou
Sorry, it's just been too long for me for this to be recalled.
IsTim
  • IsTim
Yeah. Happened to me when I was helping someone else on inequalities.
IsTim
  • IsTim
@Zarkon Uh, someone told me to ask you.
PaxPolaris
  • PaxPolaris
why is your answer wrong?
IsTim
  • IsTim
The actual answer is [x,y]=[8,2]+t[0,1].
IsTim
  • IsTim
Any clue?
IsTim
  • IsTim
I've double-checked to make sure the facts are right.
PaxPolaris
  • PaxPolaris
the -8 isn't necessary but acceptable.... both your eq. and answer equation are acceptable...
PaxPolaris
  • PaxPolaris
direction vector can be any vertical vector... starting point postion vector can refer to any point on line Infinite acceptable answers.
IsTim
  • IsTim
Like, I know that [8,0] can be anything, but my answer still isn't right in terms of t[0,1].
mysesshou
  • mysesshou
Sorry IsTim, I've searched through my calc book and solutions manual, but I guess 8-9 years is too long to remember enough of this. Hope PaxPolaris is able to help you understand. :)
PaxPolaris
  • PaxPolaris
direction vector can be any vertical vector ... [0,1] and [0,-8] are both parallel to the line so both are acceptable ... any vector [0,C] is acceptable.
IsTim
  • IsTim
Wait, you're sure you're not talking about position vector?
PaxPolaris
  • PaxPolaris
no, we're done with that...??
IsTim
  • IsTim
I don't know, they way you describe the direction vector sounds like the way my teacher described a position vector.
PaxPolaris
  • PaxPolaris
Position Vector: of any 1 point on the line Direction Vector: any vector parallel to the line
IsTim
  • IsTim
But then what's the constant?
PaxPolaris
  • PaxPolaris
the slope of the direction vector is constant ... the length of the direction vector is irrelevant
IsTim
  • IsTim
Ok. I'll just leave this question as is for now. Thanks for the help anyways, PAx.
PaxPolaris
  • PaxPolaris
eg. if your direction vector is [1,2]: it can also be [2,4] , [3,6], [-5,-10]....[n,2n] preferably you'd use the simplest form i.e. [1,2] or in your case [0,1] instead of [0,-8] http://www.netcomuk.co.uk/~jenolive/vect3.html
IsTim
  • IsTim
Hey Sess, I'm good now. Thanks for staying though. I'll take a look at it Pax Polaris.
mysesshou
  • mysesshou
Evidently, my book wasn't good enough to help. I was reading through some of this, after p.4, that seemed that it might help some. http://mysite.science.uottawa.ca/vbozi013/mat1339/ch08.pdf PaxPolaris' site is good too :)
mysesshou
  • mysesshou
Yay PaxPolaris for the help !
amistre64
  • amistre64
i think i missed the original problem as stated

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