What are the different methods to calculate vector products?

  • Thread starter Thread starter draotic
  • Start date Start date
  • Tags Tags
    Vector
Click For Summary
SUMMARY

The discussion focuses on methods to calculate vector products, specifically the cross product of two vectors. The primary formula presented is the determinant method, expressed as \(\mathbf{a} \times \mathbf{b} = \begin{vmatrix} \mathbf{i} & \mathbf{j} & \mathbf{k} \\ a_1 & a_2 & a_3 \\ b_1 & b_2 & b_3 \end{vmatrix}\). Additionally, the discussion highlights the alternative approach using the sine of the angle between the vectors, reinforcing the relationship between the geometric interpretation and algebraic computation of vector products.

PREREQUISITES
  • Understanding of vector algebra
  • Familiarity with determinants
  • Knowledge of trigonometric functions, specifically sine
  • Basic proficiency in using unit vectors i, j, k
NEXT STEPS
  • Study the geometric interpretation of vector products
  • Learn about the properties of cross products in three-dimensional space
  • Explore applications of vector products in physics, such as torque and angular momentum
  • Investigate computational methods for vector products in programming languages like Python or MATLAB
USEFUL FOR

Students studying physics or mathematics, educators teaching vector algebra, and anyone interested in understanding the applications of vector products in various fields.

draotic
Messages
52
Reaction score
0
Ways to find vector products??

Homework Statement



can any1 tell me diferent ways to find vector products?

Homework Equations





The Attempt at a Solution


i know this one
AxB=i(a2b3-a3b2)+j(a3b1-a1b3)+k(a1b2-a2b1)
 
Physics news on Phys.org


There is the way involving the angle between the two vectors (which you have used in some other problems you posted here.)
 


Wikipedia says:
\mathbf{a}\times\mathbf{b}= \begin{vmatrix}<br /> \mathbf{i} &amp; \mathbf{j} &amp; \mathbf{k} \\<br /> a_1 &amp; a_2 &amp; a_3 \\<br /> b_1 &amp; b_2 &amp; b_3 \\<br /> \end{vmatrix}
:smile: (but that's equivalent to what you already mentioned)
 

Similar threads

  • · Replies 2 ·
Replies
2
Views
4K
  • · Replies 3 ·
Replies
3
Views
8K
Replies
1
Views
2K
  • · Replies 2 ·
Replies
2
Views
1K
  • · Replies 3 ·
Replies
3
Views
7K
  • · Replies 13 ·
Replies
13
Views
3K
  • · Replies 1 ·
Replies
1
Views
1K
  • · Replies 18 ·
Replies
18
Views
1K
Replies
13
Views
2K
Replies
6
Views
2K