4 Gleichungen mit 4 Unbekannten
a
11
=
a
12
=
a
13
=
a
14
=
b
1
=
a
21
=
a
22
=
a
23
=
a
24
=
b
2
=
a
31
=
a
32
=
a
33
=
a
34
=
b
3
=
a
41
=
a
42
=
a
43
=
a
44
=
b
4
=
zurück
x
1
=
x
2
=
x
3
=
x
4
=