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

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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