Consider the following.

$r(t)=($:$4t^2,ln(t),tln(t)$:$)$

Find $r^{\text{'}}(t)$ and $r^{\text{'}\text{'}}(t).$

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

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

Find the curvature of $r(t)=(4t^2,ln(t),tln(t))$ at the point $(4,0,0).$

$=$