Inverse of Bilinear interpolation for 2parameters. It is an analytical solution.
| call | DclGrid2DForwardBLI2 | (x,y,x00,x10,x01,x11,y00,y10,y01,y11,p,q) | 
| x,y | <R> | Source Coordinates. 4 Courners are necessary to normalized to (0,0), (1,0), (1,1), (0,1) (Input).  | 
  
| x00,x10,x01,x11 | <R> | Each of Values is a value of 4 Courners of P,Q ,e.g (P,Q) = (0,0), (1,0), (1,1), (0,1) (Input). | 
| y00,y10,y01,y11 | <R> | Each of Values is a value of 4 Courners of P,Q ,e.g (P,Q) = (0,0), (1,0), (1,1), (0,1) (Input). | 
| p,q | <R> | Results of Inverse Interpolation(Output). | 
(a) Solve quadratioc simultaneous equations analytically.(Include many separates. e.g. substantially, equations become linear equations.