w2⁢(z)=ⅇ(b-c+1)⁢π⁢ⅈ⁢Γ⁡(2-c)⁢Γ⁡(a)Γ⁡(a+b-c+1)⁢Γ⁡(1-b)⁢w3⁢(z)+ⅇ(b-c)⁢π⁢ⅈ⁢Γ⁡(2-c)⁢Γ⁡(a)Γ⁡(a-b+1)⁢Γ⁡(b-c+1)⁢w5⁢(z),