A) \[y=-\cos x+\sin x+{{c}_{1}}x+{{c}_{2}}\]
B) \[y=-\cos x-\sin x+{{c}_{1}}x+{{c}_{2}}\]
C) \[y=\cos x-\sin x+{{c}_{1}}{{x}^{2}}+{{c}_{2}}x\]
D) \[y=\cos x+\sin x+{{c}_{1}}{{x}^{2}}+{{c}_{2}}x\]
Correct Answer: A
Solution :
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