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Use direction vectors to determine if each line intersects the plane 3x2y+4z=5.
r=[3,2,7]+t[3,6,2]
 2 years ago
 2 years ago
Use direction vectors to determine if each line intersects the plane 3x2y+4z=5. r=[3,2,7]+t[3,6,2]
 2 years ago
 2 years ago

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IsTimBest ResponseYou've already chosen the best response.0
I gotta sleep soon, so if you could help me promptly, that would be appreciated.
 2 years ago

IsTimBest ResponseYou've already chosen the best response.0
Sorry, I'm a little dimwitted, but isn't "0=10" a bit, illogical? I'm being a bit confrontational because it doesn't look like my example in the txtbook, even though I don't understand it.
 2 years ago

beniceBest ResponseYou've already chosen the best response.1
i was just trying to find the value of t so i let t=0 and to see how far i was off then just find t
 2 years ago

IsTimBest ResponseYou've already chosen the best response.0
Where'd you get those numbers in the brackets from?
 2 years ago

beniceBest ResponseYou've already chosen the best response.1
r=(3,2,7)+t(3,6,2) r=(3+3t,2+6t,7+2t) sub in 3x2y+4z=5 3(3+3t)2(2+6t)+4(7+2t)=5 9+9t412t+28+8t=5 15+5t=5 5t=10 t=2
 2 years ago

IsTimBest ResponseYou've already chosen the best response.0
So my goal is to solve for t?
 2 years ago

beniceBest ResponseYou've already chosen the best response.1
what values of t work so yes
 2 years ago

IsTimBest ResponseYou've already chosen the best response.0
Cause the answer section just says yes, no, yes, yes, something. How do I know if either yes or no?
 2 years ago

IsTimBest ResponseYou've already chosen the best response.0
So, If I get a value for t, it must be a yes?
 2 years ago

IsTimBest ResponseYou've already chosen the best response.0
I'm going to cry when I forget this in the morning.
 2 years ago

beniceBest ResponseYou've already chosen the best response.1
does your answer book say yes ?
 2 years ago

IsTimBest ResponseYou've already chosen the best response.0
That makes me giggle like a little schoolgirl.
 2 years ago

beniceBest ResponseYou've already chosen the best response.1
if you had the equation y=2x + 3 does the point (3,9) lie on the line yes it does .. check sub it in 9=(2)(3)+3 9=9 true now when you make 3 planes x,y,z your just check does the point lie on the plane they use word points and vector interchangeably
 2 years ago

IsTimBest ResponseYou've already chosen the best response.0
I'll just say yes. So If I have a value for t, it's a yes?
 2 years ago

IsTimBest ResponseYou've already chosen the best response.0
Ehhh, Imma sleep now. I'll be lookin at this in the morning, if I get up at the right time. Merci beaucoup!
 2 years ago
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