tim GTLN,GTNN

M

maxqn

[TEX]y' = \frac{1-lnx}{x^2}[/TEX]
[TEX]\Rightarrow y' = 0 \Leftrightarrow x = e[/TEX]
[TEX]y(1) = 0 \\ y(e) = \frac1{e} \\ y(e^3} = \frac3{e^3}[/TEX]
[TEX]\Rightarrow min = 0 = y(1) \\ max = y(e) = \frac{1}{e}[/TEX]
 
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