Determine the roots of $f$\_2($x$)=1320$x $+19$x$^23$x$^3$$:

$-$ Graphically $($Just check the graph out$)$

$-$ Using bisection method. Employ initial guesses of $x$\_$l $=1$$ and $x$\_$u $=0$$$,$ and iterate until the estimated error $$\backslash$epsi $\_$a$ falls below $0\mathrm{.}01\%.$ Save results $(1\backslash$times $3$ matrix order : root, error percentage, number of iteration$)$ on $***$HW$3\_5.$dat$***$ file

$-$ Using false position method. Employ initial guesses of $x$\_$l $=1$$ and $x$\_$u $=0$$$,$ and iterate until the estimated error $$\backslash$epsi $\_$a$ falls below $0\mathrm{.}01\%.$ Save results $(1\backslash$times $3$ matrix order : root, error percentage, number of iteration$)$ on $***$HW$3\_6.$dat$***$ file