diff-equation

Question: If $\frac{{{d}^{2}}y}{d{{x}^{2}}}+\sin x=0,$ then solution of the differential equation is.



1) $\sin x+{{c}_{1}}x+{{c}_{2}}$
2) $\cos x+{{c}_{1}}x+{{c}_{2}}$
3) $\tan x+{{c}_{1}}x+{{c}_{2}}$
4) $\log \sin x+{{c}_{1}}x+{{c}_{2}}$
Solution: Explanation: No Explanation
Miscellaneous differential equations

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