If

r$($t$)=$

$6$t$,2$t$2,4$t$3,$ 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$)=$