M⁡(a,b,z)=Γ⁡(1+a-b)2⁢π⁢ⅈ⁢Γ⁡(a)⁢∫0(1+)ⅇz⁢t⁢ta-1⁢(t-1)b-a-1⁢ⅆ⁡t,