Abs
This applies the absolute function to a single parameter either a scalar, vector, or matrix.
\[
A = \begin{bmatrix}
-1 & 2 \\\\
3 & -4
\end{bmatrix},
B = \begin{bmatrix}
2 & 4 \\\\
6 & 8
\end{bmatrix},
C = \begin{bmatrix}
-1 \\\\
3
\end{bmatrix},
D = \begin{bmatrix}
-1 & 3
\end{bmatrix}
\]
Abs(Scalar) = Scalar
\[
Abs(-1) = 1
\]
\[
Abs(1) = 1
\]
Abs(Vector) = Vector
The orientation of the vector will be maintained in the resulting vector.
\[
Abs(C) = \begin{bmatrix}
1 & 3
\end{bmatrix}
\]
Abs(Matrix) = Matrix
\[
Abs(A) = \begin{bmatrix}
1 & 2 \\\\
3 & 4
\end{bmatrix}
\]