MCQ
The solution of the differential equation `dy/dx=1+y/x+(y/x)^2` is ______.
- A`sin^-1(y/x)=logx+c`
- B`sin^-1(y/x)=-logx+c`
- ✓`tan^-1(y/x)=logx+c`
- D`tan^-1(y/x)=-logx+c`
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In the above reaction, oxidation state of sulphur changes from ____________.