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| 1. |
`y=a cos x+b sin x+x sin x` is a solution of the D.E. A)`y_(2)+y=x cos x` B)`y_(2)+2y=2cos x` C)`y_(2)+y=2cos x` D)`y_(2)-y=2cos x`A. `y_(2)+y=x cos x`B. `y_(2)+2y=2cos x`C. `y_(2)+y=2cos x`D. `y_(2)-y=2cos x` |
| Answer» Correct Answer - C | |