limit as x approaches 8 of (x^2)/(x-8)

解答

x \to 8 lim (\frac{x ^{2}}{x - 8})

发散

求解步骤

x \to 8 lim (\frac{x ^{2}}{x - 8})

若

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

则极限不存在

x \to 8 + lim (\frac{x ^{2}}{x - 8}) = \infty

x \to 8 - lim (\frac{x ^{2}}{x - 8}) = - \infty

= 发散

x \to 3 lim (5 f (x))

x \to 0 lim (- 5)

x \to 5 lim (\frac{2 x ^{2} - 11 x + 5}{x - 5})

x \to - 2 + lim (1 + x^{3})

t \to 4 lim (\frac{t - 3 t + 4}{4 - t})