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  • 错题整理

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    October08,2021

    $$ y=f(x)=\ln(x+\sqrt{x^2+1}) $$ 求$f^{-1}(x)$ 答 $$ -y = -\ln(x+\sqrt{x^2+1}) ;\\ \= \ln{\frac{1}{x+\sqrt{x^2+1}}} ;\...

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