Quantcast Simple Analytic Geometry Question - XP Math - Forums

XP Math Home Sign Up FREE! | Sign In | Classroom Setup | Common Core Alignment PDF Version

Go Back   XP Math - Forums > Mathematics > Homework Help

Thread Tools Display Modes
Old 10-28-2007   #1
Posts: n/a
Default Simple Analytic Geometry Question

Find a vector perpendicular to the plane (1 1 1).

Super easy I know, but for some reason I can't find out how to get the vector...
Old 10-28-2007   #2
Posts: n/a

This is Analytic Geometry, and therefore I am changing the title

Hint: Cross products.
Old 10-28-2007   #3
Posts: n/a

n x plane = (0 0 0) ?

n x vector = (1 1 1) ?

From intuition the vector should be 111 or -1-1-1.

I've looked all over the internet and my old textbooks. This is a simple question and I've done this type of stuff over 4 years ago. I'm now in my 3rd year of engineering and finding this vector is a tiny part of answering a much, much bigger question (critical resolved shear stress in an FCC crystalline structure).

I worked out the final answer with 111, and it seems wrong. Answer was 0.933MPa when it should lie between 50-100psi.

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -4. The time now is 11:08 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.
XP Math