"js=Gs*jw      jd=j/(1+w)    jd=js/(1+e)
 jz=(1+wz)*jd   jz=((Gs+e)/(1+e))*jw    jz=((Gs(1+w)/(1+e))*jw 
jz=((Sre+Gs)/(1+e))*jw      n=e/(1+e)*100     e=js/jd-1  jd=js/(1+e)
wz=(1/jd-1/js)*jw    Sr=w/wz*100    
Cu=D60/D10          Cz=D30^2/(D10*D60) "      