limit as x approaches 0+of (1-ln(x))/(e^{1/x)}

解

x \to 0 + lim (\frac{1 - ln ( x )}{e ^{\frac{1}{x}}})

0

解答ステップ

x \to 0 + lim (\frac{1 - ln ( x )}{e ^{\frac{1}{x}}})

ロピタルの定理を適用する

= x \to 0 + lim \frac{- \frac{1}{x}}{- \frac{e ^{\frac{1}{x}}}{x ^{2}}}

簡素化

\frac{- \frac{1}{x}}{- \frac{e ^{\frac{1}{x}}}{x ^{2}}} : \frac{x}{e ^{\frac{1}{x}}}

= x \to 0 + lim (\frac{x}{e ^{\frac{1}{x}}})

x \to a lim [\frac{f ( x )}{g ( x )}] = \frac{lim _{x \to a} f ( x )}{lim _{x \to a} g ( x )}, x \to a lim g (x) \neq = 0

不定形式の場合を除く

= \frac{lim _{x \to 0 +} ( x )}{lim _{x \to 0 +} ( e ^{\frac{1}{x}} )}

x \to 0 + lim (x) = 0

x \to 0 + lim (e^{\frac{1}{x}}) = \infty

= \frac{0}{\infty}

無限大の特性を適用する:

\frac{0}{\infty} = 0

= 0