w5⁢(z)=ⅇa⁢π⁢ⅈ⁢Γ⁡(a-b+1)⁢Γ⁡(c-a-b)Γ⁡(1-b)⁢Γ⁡(c-b)⁢w3⁢(z)+ⅇ(c-b)⁢π⁢ⅈ⁢Γ⁡(a-b+1)⁢Γ⁡(a+b-c)Γ⁡(a)⁢Γ⁡(a-c+1)⁢w4⁢(z),