In this problem, wse the general expressions for left and right sums,

and left$-$hand sum $=f(t_0)t+f(t_1)t+$cdots$+f(t_{n-1})t$

and the following table:

right$-$hand $sinm=f(t_1)t+f(t_2)t+$cdots$+f(t_n)t$

$\backslash$table$[[t,0,4,8,12,16],[f(t),35,33,31,30,29]]$

A$.$ If we use $n=4$ subdivisions, fill in the values:

$t^{}=$

$t_0=$:$t_1=$:$t_2=$:$t_3=$:$t_4=$

$f(t_0)=f(t_1)=$:$f(t_2)=,f(t_3)=1$:$f(t_4)=$

B$.$ Find the left and right sums using $n=4$

left sum $=$

right sum $=$

C$.$ If we use $n=2$ subdivisions, fill in the values:

$t=$

$t_0=,$;$t_1=,$;$t_2=$

$f(t_0)=,f(t_1)=,f(t_2)=$

D$.$ Find the leff and right sums using $n=2$

left sum $=$

right sum $=$