∫abⅇⅈ⁢x⁢p⁡(t)⁢q⁡(t)⁢ⅆ⁡t∼ⅇⅈ⁢x⁢p⁡(a)⁢∑s=0∞exp⁡((s+λ)⁢π⁢ⅈ2⁢μ)⁢Γ⁡(s+λμ)⁢bsx(s+λ)/μ-ⅇⅈ⁢x⁢p⁡(b)⁢∑s=0∞Ps⁡(b)⁢(ⅈx)s+1,