f(iI ,i2)

 g(i, ,i2)




 ig


 L=
 U=3
 A=

 U2
 L=I

 U=2
A=I


i


ii


j3

i2


 J2

 L= Li






 L =Li,

A= I


 FIGURE 4-1
EXAMPLE PROBLEM FOR DECOUPLING


J J4 jz J3

i J j3 j4