- #1
gravity90
- 4
- 0
Hi everyone!
There is something that I would like to ask you. Suppose you have
[tex]\frac{1}{\sqrt{-g}} \frac{\delta (\sqrt{-g} (g^{ab} u_a u_b + 1))}{\delta g^{cd}}[/tex]
The outcome of this would be ##u_{c}u_{d}## or ##-u_{c} u_{d}## ?
I am really confused.
There is something that I would like to ask you. Suppose you have
[tex]\frac{1}{\sqrt{-g}} \frac{\delta (\sqrt{-g} (g^{ab} u_a u_b + 1))}{\delta g^{cd}}[/tex]
The outcome of this would be ##u_{c}u_{d}## or ##-u_{c} u_{d}## ?
I am really confused.
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