Graphics Reference
In-Depth Information
Inverse
(
cofactor matrix of
M
)
T
det
M
M
−
1
=
]
−
1
N
−
1
M
−
1
.
[
MN
=
Orthogonal
M
is orthogonal if
M
T
M
−
1
.
=
Trace
Tr
(
A
)
=
a
+
d
=
+
+
Tr
(
B
)
a
e
i
=
Tr
(
MN
)
Tr
(
NM
).
Symmetric
M
T
.
M
is symmetric if
M
=
Symmetric part S
2
M
M
T
.
1
S
=
+
Antisymmetric
M
T
.
M
is antisymmetric if
M
=−
Antisymmetric part Q
2
M
M
T
.
1
Q
=
−
Eigenvector
=
v
is the eigenvector of
M
if
Mv
λ
v
.
Eigenvalue
λ
is the eigenvalue of
M
if
Mv
=
λ
v
.