χͺ(4)Μ1D(2)Μπ
y
=
x
x
y
=
e
log
x
x
=
e
x
log
x
y
′
=
e
x
log
x
·
(
x
log
x
)
′
=
x
x
·
(
log
x
+
x
·
1
x
)
=
x
x
(
log
x
+
1
)
Λ
ΜβθΜπ
Λ
π2
Λ
qg1
,
qg2
,
qg3
,
qg4
Λ
πΰ1
Λ
χͺ(4)ΜTOPΦίι