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Gaokao Math Practice Question

7. 已知曲线 $y=a \mathrm{e}^{x}+x \ln x$ 在点 $(1, a e)$ 处的切线方程为 $y=2 x+b$, 则 ( )

  1. A.$a=e, b=-1$
  2. B.$a=e, b=1$
  3. C.$a=e^{-1}, b=1$
  4. D.$a=e^{-1}, b=-1$

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