$[-/4$ Points$]$

SCALCET$9$M $13\mathrm{.}2\mathrm{.}023.$

If $r(t)=($:$t^8,t,t^2$:$),$ find $r^{\text{'}}(t),T(1),r^{\text{'}\text{'}}(t),$ and $r^{\text{'}}(t)r^{\text{'}\text{'}}(t)$

$r^{\text{'}}(t)=$

$T(1)=$

$r^{\text{'}\text{'}}(t)=$

$r^{\text{'}}(t)r^{\text{'}\text{'}}(t)=$