12
Δ
ϕ
=
4
π
G
ρ
→
Δ
ϕ
−
Λ
ϕ
=
4
π
G
ρ
Close
Log in
Books
Repository
eAnswer
ePortfolio
Close
Log in
Books
Repository
eAnswer
ePortfolio
Log in
New user
OK
Error
Forgot?
Log in
Register
Recover
OK
Error
Change