plot1+=arrow3d((-1+i/2,-1+j/2,f(x=-1+i/2,y=-1+j/2)),(-1+i/2+Fx(x=-1+i/2,y=-1+j/2), -1+j/2+Fy(x=-1+i/2,y=-1+j/2),f(x=-1+i/2,y=-1+j/2)+Fz(x=-1+i/2,y=-1+j/2,z=f(x=-1+i/2,y=-1+j/2))),color="blue")

    
    
    Evaluate
    

        

            
                Language:
                
                    Sage
                    Gap
                    GP
                    HTML
                    Macaulay2
                    Maxima
                    Octave
                    Python
                    R
                    Singular
                
            
        
    
    




    

    

        

        Messages