limit as x approaches 0 of 3-1/x

解答

x \to 0 lim (3 - \frac{1}{x})

发散

求解步骤

x \to 0 lim (3 - \frac{1}{x})

若

x \to a^{-} lim f (x) \neq = x \to a^{+} lim f (x)

则极限不存在

x \to 0 + lim (3 - \frac{1}{x}) = - \infty

x \to 0 - lim (3 - \frac{1}{x}) = \infty

= 发散

f (x) = π^{x}

\frac{d}{d x} (x x^{2} - 3 x + 2)

\int 9 x - 5 d x

x \to - 1 lim (6 x + 5)

\frac{d}{d x} (arccos (\frac{x}{1 - x ^{2}}))