w1⁢(z)=Γ⁡(c)⁢Γ⁡(b-a)Γ⁡(b)⁢Γ⁡(c-a)⁢w5⁢(z)+Γ⁡(c)⁢Γ⁡(a-b)Γ⁡(a)⁢Γ⁡(c-b)⁢w6⁢(z),