Consider the following function. $($If an answer does not exist, enter DNE.$)$

g$($x$)=190+8$x$^(3)+$x$^(4)$x$,$ then from smallest to largest y$.($x$,$y$)=(*)$

$($x$,$y$)=(**)$

Find the interval$($s$)$ where the graph is concave up$.($Enter your answer using interval notation.$)$

Find the interval$($s$)$ where the graph is concave down. $($Enter your answer using interval notation.$)$