y⁢(1-y)⁢∂2⁡F2∂⁡y2-x⁢y⁢∂2⁡F2∂⁡x⁢∂⁡y+(γ′-(α+β′+1)⁢y)⁢∂⁡F2∂⁡y-β′⁢x⁢∂⁡F2∂⁡x-α⁢β′⁢F2=0,