0
0/12
13
Differentialrechnung
0/12/2
13.2
Ableitungsregeln
0/12/2/6
13.2.6
Logarithmische Ableitung
0/12/2/6/1
.
Beispiel 13 - 78
f
(
x
)
=
y
=
x
sin
x
.
ln
f
(
x
)
=
ln
(
x
sin
x
)
ln
f
(
x
)
=
sin
x
⋅
ln
(
x
)
u
=
f
(
x
)
äußere Funktion
F
(
u
)
=
ln
(
u
)
innere Funktion
d
ln
(
u
)
d
u
⋅
d
u
d
x
=
cos
x
⋅
ln
x
+
(
sin
x
)
⋅
1
x
1
f
(
x
)
⋅
f
′
(
x
)
=
cos
x
⋅
ln
x
+
(
sin
x
)
⋅
1
x
f
′
(
x
)
=
(
cos
x
⋅
ln
x
+
(
sin
x
)
⋅
1
x
)
⋅
f
(
x
)
=
(
cos
x
⋅
ln
x
+
(
sin
x
)
⋅
1
x
)
⋅
x
sin
x
.