$\"\"$

(a)

The function is $\"\"$ on the interval $\"\"$ .

The interval is partitioned into $\"\"$ subintervals of equal width $\"\"$ .

The left end point of $\"\"$ interval is $\"\"$ .

The left end point approximation is will be greater than the actual area.

$\"\"$ .

$\"\"$

(b)

The function is $\"\"$ on the interval $\"\"$ .

The interval is partitioned into $\"\"$ subintervals of equal width $\"\"$ .

The right end point of $\"\"$ interval is $\"\"$ .

The right end point approximation is will be less than the actual area.

$\"\"$ .

$\"\"$

(a)

$\"\"$ .

(b)

$\"\"$ .