![](https://i.imgur.com/s5wQqAq.jpg)
![](https://i.imgur.com/s5wQqAq.jpg)
請問一下常數p微分完會是0嗎
不太懂為何提前面 微分完還是p嗎
這問題好像太淺等等要刪文了…
謝謝
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