### Home > CALC > Chapter 9 > Lesson 9.3.2 > Problem9-97

9-97.

Find the approximation of the area under $f ( x ) = 2 \operatorname { cos } \sqrt { x } + 3$ between $0 ≤ x ≤ 3$ using six midpoint rectangles of equal width.

The width of each rectangle will be $0.5$, so using midpoints: