a$)$ Determine a sequence of basic transformations that are equivalent to the x$-$direction shearing matrix.

$[1$ s $0]$

$[010]$

$[001]$

b$)$ Determine a sequence of basic tranformations that are equivalent to the y$-$direction shearing matrix.

$[100]$

$[$s $1-$s$*$xref$]$

$[001]$