332 O. I. Broch. 



I (i+dy-|-ey4-fy-(!'«+aiy-H»iy')('>o+»'iy))^ x 

 i34){ xi/(i+'iy+'=y+fy)='=3((»o+a,y4-a,y)- 



f ^ S 



( _(b^+b,y)(l+dy+e/+fy)) ' 



2 2 



X (l+dx,+ex,+fx J)K(l+dx,+ex,+fe J == 

 2 2 



=Ci((bo+I>iXi)— (ao+ai^i+a2X2))X 



X(l+dxx+ex,+fxJ), 

 2 2 

 ((a^+a.x^+afi^Ca)— (bo+bjxj X 



135),'X (l-Hxi+ex2+f^2))l/'(l+dx2+eX4+feJ = 

 j 2 2 



I =<:2(('»o4-'»iS2)— (ao+ai^i+«2Xa)) X 



((ao+Oiy+a^yV-Cbo+biy) X 



o 9 9 2 ^ 



X (i+dy-|-ey4-fy))F (i-Hy+ey+fy)— 



2 ^ 



= c.CC-o+Ky) - («o-Hiy+a^y")) X 



X (l+dy+ey+fy). 



