Q^-12+ⅈ⁢τ-μ⁡(x)∼π⁢Γ⁡(μ)⁢(ⅇ-τ⁢π⁢cos2⁡(μ⁢π)+sinh⁡(τ⁢π))2⁢(cosh2⁡(τ⁢π)-sin2⁡(μ⁢π))⁢|Γ⁡(μ+12+ⅈ⁢τ)|2⁢(21-x)μ/2.