A computer $is$ purchased for $$2058.$ Its value $in$ dollars after $t$ years can $be$

approximated $byV(t)=\frac{2058}{(2t+1{)}^2},$ where $0t4.$

$(a)$ Find the value $of$ the computer $3$ years after purchase.

$(b)At$ time $t=3$ years, use a derivative $to$ estimate how much the value will

change within the next year.

$(a)$ The value $of$ the computer $3$ years after purchase $is$ $$.$

$(b)At$ time $t=3$ years, the value $of$ the computer will

$by$

approximately dollars within the next year.

$(Type$ a whole number.$)$