• Support PF! Buy your school textbooks, materials and every day products Here!

Vector 3d

  • Thread starter chocbizkt
  • Start date
  • #1
5
0
2 questions i have;
if true

1. proove that; p x ( q + r ) = p x q + p x r

2. and p x ( q x r ) = ( p x q ) x r

where;

p = p1i + p2j + p3k
q = q1i + q2j + q3k
r = r1i + r2j + r3k

i have left handside p x (q + r) = (p1i + p2j + p3k)( (q1+ r1)i + (q2+ r2)j + (q3+ r3)k)

am i on the right track?
 

Answers and Replies

  • #2
Dick
Science Advisor
Homework Helper
26,258
618
You're on the right track. But you've barely started. Now do the cross product.
 

Related Threads on Vector 3d

  • Last Post
Replies
6
Views
821
  • Last Post
Replies
6
Views
2K
  • Last Post
Replies
1
Views
6K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
11
Views
2K
  • Last Post
Replies
2
Views
1K
  • Last Post
Replies
2
Views
5K
  • Last Post
Replies
6
Views
8K
  • Last Post
Replies
7
Views
8K
  • Last Post
Replies
13
Views
4K
Top