PP Presentation
(9)
For a small E , ,since D is an integer,
we will round off at the end anyway. E.g.,
¶
U
¶
D
=
0
=
D
2
+
D
(
H
+
CT
)
+
H
+
CT
ln(
1
-
E
)
D
opt
=
H
+
CT
2
1
-
4
(
H
+
CT
)
l
(
1
-
E
)
-
1
é
ë
ê
ù
û
ú
(10)
also, a small E means that both the 1 under the radical and the 1 following the radical can be ignored