hi i wanted to solve a linear equation system it's something like below: for i=-k:n, for j=0:m if i>=0 f1(i,j)p[i][j]=f2(i,j)p[i-1][j]+f3(i,j)p[i+1][j+1]+f4(i,j)p[i][j-1] else f'1(i,j)p[i][j]=f2(i,j)p[i-1][j]+f3(i,j)p[i+1][j+1]+f4(i,j)p[i][j-1] i'm looking forward to your guidance