y=lg(x-√(x^2-a^2))的导数,答案是y✀=-1⼀√(x^2-a^2)lge,求过程啊

2025-01-19 16:58:55
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回答1:

答案错了吧!y'=(1-x/√(x^2-a^2))/(x--√(x^2-a^2))ln10=-1/√(x^2-a^2)ln10