x⁢(1-x)⁢∂2⁡F1∂⁡x2+y⁢(1-x)⁢∂2⁡F1∂⁡x⁢∂⁡y+(γ-(α+β+1)⁢x)⁢∂⁡F1∂⁡x-β⁢y⁢∂⁡F1∂⁡y-α⁢β⁢F1=0,