Equation Icon  (1) (1) (1) hμν → hμν + 2ξ(μ;ν), (22.89 ) (2) (2) (2) (1) ρ (1) ρ ρ (1) ρ (1) ρ (1) hμν → hμν + ξ(μ;ν) + h μν;ρξ(1) + 2hρ(μξ(1);ν) + ξ(1)ξ(μ;ν)ρ + ξ(1);μξρ;ν + ξ(1);(μξν);&#x03