Similarly to the
, the function
computes the matrix:
![Rendered by QuickLaTeX.com \[d=\left(\begin{array}{c}0_{b\times a}\\I_a\\0_{c\times a}\end{array}\right).\]](https://usercontent.one/wp/www.iqclab.eu/wp-content/ql-cache/quicklatex.com-72ab11b74c8ed5bdcd498203ba80aaf6_l3.png?media=1702023987)
- If
is not specified, then it is assumed to be zero - If only
is specified, then
is assumed to be zero and
.
Note: The difference between the function fJ and fJt is that the roles of
and
are interchanged.
