MCQ
अवकल समीकरण $(x+y)(d x-d y)=d x+d y$ का हल है :
- A$\frac{x^2}{2}-\frac{y^2}{2}=x+y+c$
- B$x-y=\log (x+y)+c$
- ✓$\frac{x^2}{2}-\frac{y^2}{2}+x y=x+y+c$
- D$x+y=\log (x-y)+c$
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