Gaokao Math Practice Question
函数 $y=\frac{x}{2 x-1}$ 在点 $(1,1)$ 处的切线方程为 （$\qquad$）
- A.$x-y-2=0$
- B.$x+y-2=0$
- C.$x+4 y-5=0$
- D.$x-4 y+3=0$
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