Find $T_n(x)$ for the given function at the number $a.$

$,f(x)=xcos(3x),a=0,n=5,-0\mathrm{.}3x0\mathrm{.}3$

$T_5(x)=$

Investigate the accuracy of your approximation by finding an upper bound for $|R_n(x)|$ when $x$ lies in the given interval. $($Round your answer to six decimal places.$)$

$|R_5(x)|$

$q,$