$(4$ pts$)$ Consider the function

f $($x$)=3($x$216)$

x$29.$

whose domain is all x except x $=3.$

Show that the first and second derivatives of this function are given

by

f $($x$)=42$x

$($x$29)2,$ f $($x$)=126($x$2+3)$

$($x$29)3$