MCQ
$x y=e^{x-y}$ માટે, $\frac{d y}{d x}=$ _________.
- A$\frac{y(x+1)}{x(y-1)}$
- ✓$\frac{y(x-1)}{x(y+1)}$
- C$\frac{y(y+1)}{x(x-1)}$
- D$\frac{x(y+1)}{y(x-1)}$
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