The Solution Of $y ^ { \prime \prime } + 3 y ^ { \prime } - 4 y = \cos x$

question 47

Multiple Choice

The solution of $y ^ { \prime \prime } + 3 y ^ { \prime } - 4 y = \cos x$ is

• A) \(y = c _ { 1 } e ^ { x } + c _ { 2 } e ^ { - 4 x } + ( 5 \sin x + 3 \cos x ) / 34\)
• B) \(y = c _ { 1 } e ^ { x } + c _ { 2 } e ^ { - 4 x } + ( - 5 \sin x + 3 \cos x ) / 34\)
• C) \(y = c _ { 1 } e ^ { x } + c _ { 2 } e ^ { - 4 x } + ( - 5 \cos x - 3 \sin x ) / 34\)
• D) \(y = c _ { 1 } e ^ { x } + c _ { 2 } e ^ { - 4 x } + ( 5 \cos x + 3 \sin x ) / 34\)
• E) \(y = c _ { 1 } e ^ { x } + c _ { 2 } e ^ { - 4 x } + ( - 5 \cos x + 3 \sin x ) / 34\)

---

Definitions:

Prospect

A potential customer or client who meets the criteria to purchase a product or service but has not yet done so.

Act Immediately

A call to action urging individuals to respond or make a decision without delay, often used in marketing to create urgency.

Suggestive Proposition Close

A sales technique where the salesperson suggests a specific action or decision for the customer, promoting a sense of urgency or benefit.

Beneficial

Having a positive effect; contributing to a favorable outcome or advantage.