Use NINT on a Calculator to Find the Numerical Integral $$f ( x ) = x ^ { 2 } \cos x ; [ 0,6 \pi ]$$

question 74

Multiple Choice

Use NINT on a calculator to find the numerical integral of the function over the specified interval.
- $$f ( x ) = x ^ { 2 } \cos x ; [ 0,6 \pi ]$$
Round to three decimal places.

• A) \(- 38.699\)
• B) \(38.699\)
• C) \(37.699\)
• D) \(19.85\)

---

Definitions:

Variable Cost

Payments that adjust in direct relation to the amount of production or sales, including raw materials and direct labor.

Total Variable Cost

The sum of all variable costs that change with the level of production, including materials, labor, and variable overhead.

Units Sold

The total quantity of products sold by a company during a specific period.

Variable Cost

Variable expenses that are closely aligned with the level of production or the volume of sales, for example, raw materials and direct labor.