What property of lagrangian is used here?

  • Thread starter aaaa202
  • Start date
  • #1
1,170
3
Hi, the attached picture shows a derivation of what I can only assume to be the property that the lagrange equations are invariant under a transformation of the coordinates.
But I have some trouble understanding how you go from the term pointed out the rear of the arrow to the point pointed out by the front of the arrow. Can anyone explain?
 

Attachments

Answers and Replies

  • #2
dextercioby
Science Advisor
Homework Helper
Insights Author
13,016
566
It's really easy

[tex] \frac{\partial q^{i}}{\partial \dot{Q}^{j}} = 0 [/tex]

then he used the equality written on the first line just before the text written (apparently) in some Nordic language.
 

Related Threads on What property of lagrangian is used here?

Replies
2
Views
2K
Replies
9
Views
756
Replies
3
Views
2K
  • Last Post
Replies
1
Views
1K
Replies
1
Views
741
Replies
1
Views
814
Replies
4
Views
816
Replies
1
Views
9K
Replies
0
Views
821
Top