$\text { Which of the following is a solution of the differential equation } 7 y ^ { \prime \prime } + 7 y = 0 \text { ? }$

question 64

Multiple Choice

$\text { Which of the following is a solution of the differential equation } 7 y ^ { \prime \prime } + 7 y = 0 \text { ? }$

• A) \(x ^ { 2 } e ^ { x } - 3 x ^ { 2 }\)
• B) \(C _ { 1 } e ^ { - x } \cos x + C _ { 2 } e ^ { - x } \sin x\)
• C) \(- \cos x \ln | \sec x + \tan x |\)
• D) \(C _ { 1 } \cos x + C _ { 2 } \sin x\)
• E) \(e ^ { - 3 x } + e ^ { x }\)

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Definitions:

Problem-Focused Coping

A direct response aimed at reducing, modifying, or eliminating a source of stress.

General Adaptation Syndrome

A theoretical model describing the body's short-term and long-term reactions to stress, incorporating stages of alarm, resistance, and exhaustion.

Exhaustion Stage

The third stage of the general adaptation syndrome, which occurs if the organism fails in its efforts to resist the stressor.

Primary Appraisal

A cognitive evaluation of a potentially stressful event to determine whether its effect is positive, irrelevant, or negative.