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Home  >>  EAMCET  >>  Mathematics
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If $ y =\large\frac{\log_{\Large e}x}{x}$ and $z= \log_ ex,$ then $\large\frac{d^2y}{dz^2}+\frac{dy}{dx}=$

\[(a)\;e^{-z} \quad (b)\;2e^{-x} \quad (c)\;ze^{-z} \quad (d)\;-e^{-z}\]

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1 Answer

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$ (d)\;-e^{-z}$
answered Nov 7, 2013 by pady_1
 
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