Evaluate the Integral $$\int - 6 x \cos 9 x d x$$

question 154

Multiple Choice

Evaluate the integral.
- $$\int - 6 x \cos 9 x d x$$

• A) \(- \frac { 2 } { 3 } \cos 9 x - 6 x \sin 9 x + C\)
• B) \(- \frac { 2 } { 27 } \cos 9 x - \frac { 2 } { 3 } x \sin 9 x + C\)
• C) \(- \frac { 2 } { 27 } \cos 9 x - \frac { 2 } { 3 } x \sin 6 x + C\)
• D) \(- \frac { 2 } { 27 } \cos 9 x - \frac { 2 } { 3 } \sin 9 x + C\)

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Definitions:

Cost of Goods Sold

The total direct costs attributable to the production of goods sold in a company.

Cash Basis

An accounting method that records revenues and expenses when they are actually received or paid, respectively.

Operating Activities

Transactions and events that relate to the core business operations of a company, such as selling products, providing services, and incurring necessary expenses.

Cash Dividend

A financial disbursement by a corporation to its stockholders, typically from earnings distribution.