
60 Eecve Medium Approach
1
A
2
1
T
2
+
2
A
2
2
T
2
=
3
A
2
3
T
2
.
1
T
3
-
2
T
3
= 0.
2
A
3
2
T
3
+
3
A
3
3
T
3
+
4
A
3
4
T
3
= 0.
Let us also write the boundary conditions for the components
a
1
E
3
+ (1 - a)
2
E
3
-
3
E
3
= 0.
...