Express the Sum or Difference as a Product $$\cos \frac { 7 x } { 2 } + \cos \frac { 5 x } { 2 }$$

question 104

Multiple Choice

Express the sum or difference as a product.
- $$\cos \frac { 7 x } { 2 } + \cos \frac { 5 x } { 2 }$$

• A) \(2 \cos 3 x \cos \frac { x } { 2 }\)
• B) \(2 \sin 3 x \sin x\)
• C) \(2 \sin 3 x \sin \frac { x } { 2 }\)
• D) \(2 \cos 3 x\)

Acknowledge the characteristics and development of transformational grammar in language.

Appreciate the role of creativity and productivity in language use and linguistic expression.

Understand the concept of risk and return in finance and how they are measured.

Comprehend the key aspects of portfolio theory, including diversification, beta, and the efficient frontier.

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