Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
ranyai12
Group Title
Please Help! Parameterize the plane that contains the three points (3,−5,−2), (10,−12,−10), and (25,0,5).
r(s,t)=
 one year ago
 one year ago
ranyai12 Group Title
Please Help! Parameterize the plane that contains the three points (3,−5,−2), (10,−12,−10), and (25,0,5). r(s,t)=
 one year ago
 one year ago

This Question is Open

ranyai12 Group TitleBest ResponseYou've already chosen the best response.0
I first assigned the points to P Q and R and then found PQ and PR and then put P+u<PQ>+v<PR> and I got <3+7s+22t,57s+5t,28s+7s> but got it wrong!
 one year ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.0
what did you get for vector PQ
 one year ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.0
btw, this page may help you out http://math.harvard.edu/~ytzeng/worksheet/0926_sol.pdf see page 3
 one year ago

ranyai12 Group TitleBest ResponseYou've already chosen the best response.0
I got <7,7,8>
 one year ago

ranyai12 Group TitleBest ResponseYou've already chosen the best response.0
Yes i looked at that and Im stll not sure what i dd wrong
 one year ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.0
how about PR?
 one year ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.0
ok, so far, so good
 one year ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.0
I'm assuming you tried <3+7s+22t,57s+5t,28s+7t>and not <3+7s+22t,57s+5t,28s+7s> right?
 one year ago

ranyai12 Group TitleBest ResponseYou've already chosen the best response.0
i did it twice and got it wrong twice
 one year ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.0
ok one sec
 one year ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.0
does it specify at all which variables are the free variables (like x and y or x and z)?
 one year ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.0
hmm well I managed to find a calculator that will give the equation of the plane
 one year ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.0
that equation is x25y+21z80 = 0 x25y+21z= 80 solve for x: x25y+21z= 80 x = 80+25y21z x = 8025y+21z
 one year ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.0
so if you let y = s and z = t, then you will get <x, y, z> = <8025y+21z, y, z> <x, y, z> = <8025s+21t, s, t>
 one year ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.0
unfortunately there are many ways to parameterize the plane
 one year ago

ranyai12 Group TitleBest ResponseYou've already chosen the best response.0
can you please provide me with an example
 one year ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.0
what do you mean
 one year ago

ranyai12 Group TitleBest ResponseYou've already chosen the best response.0
as in please show me a way o parameterize this
 one year ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.0
well you could take the cross product of vectors PQ and PR
 one year ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.0
that will give you the normal vector to the plane
 one year ago

ranyai12 Group TitleBest ResponseYou've already chosen the best response.0
what would i do then
 one year ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.0
what do you get when you do the cross product
 one year ago

ranyai12 Group TitleBest ResponseYou've already chosen the best response.0
gimme a sec
 one year ago

ranyai12 Group TitleBest ResponseYou've already chosen the best response.0
89i+113j+189k
 one year ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.0
somewhat close, but that's not correct
 one year ago

ranyai12 Group TitleBest ResponseYou've already chosen the best response.0
what is it then?
 one year ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.0
try it again
 one year ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.