0
0/11
12
Hyperbel- und Areafunktionen
0/11/1
12.1
Hyperbelfunktionen
0/11/1/0
12.1.1
Hyperbelsinus und - cosinus
0/11/1/0/1
.
Beispiel 12 - 68
c
o
s
h
2
λ
-
s
i
n
h
2
λ
=
.
.
c
o
s
h
2
λ
-
s
i
n
h
2
λ
=
.
(
1
2
)
2
⋅
(
e
λ
+
e
-
λ
)
2
-
(
1
2
)
2
⋅
(
e
λ
-
e
-
λ
)
2
=
.
=
1
4
⋅
e
2
λ
+
1
4
⋅
e
-
2
λ
+
1
2
⋅
e
λ
⋅
e
-
λ
-
.
-
1
4
⋅
e
2
λ
-
1
4
⋅
e
-
2
λ
+
1
2
⋅
e
λ
⋅
e
-
λ
=
1
2
+
1
2
=
1
.
.
