Q30
If d^2 y d t^2 + y = 0 under the conditions y = 1, dy dt = 0, when t = 0, then y is equal to
If under the conditions y = 1, when t = 0, then y is equal to
A.
sin t
B.
cos t
AnswerC.
tan t
D.
cot t
Answer: Option B
Solution
Answer: Option B
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