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

Vector Calculus - Tensor Identity Problem

  • #1
2
0

Homework Statement



upload_2016-12-7_18-43-21.png


Homework Equations


upload_2016-12-7_18-43-51.png


upload_2016-12-7_18-45-54.png


The Attempt at a Solution



I am really lost here because our professor gave us no example problems leading up to the final exam and now we are expected to understand everything about vector calculus.

upload_2016-12-7_18-53-52.png


This is my attempt at the cross product and dot product written out. I don't know how to proceed to make the left hand side equal the right hand side.
[/B]
 

Answers and Replies

  • #2
264
70
Use the expression for the scalar product between two vectors ##\mathbf{a}## and ##\mathbf{b}##:
$$\mathbf{a}\cdot\mathbf{b}=\sum_i a_i b_i $$
 

Related Threads for: Vector Calculus - Tensor Identity Problem

  • Last Post
Replies
5
Views
1K
  • Last Post
Replies
7
Views
2K
  • Last Post
Replies
2
Views
1K
  • Last Post
Replies
5
Views
1K
  • Last Post
Replies
3
Views
963
  • Last Post
Replies
2
Views
737
  • Last Post
Replies
5
Views
550
  • Last Post
Replies
0
Views
3K
Top