limit as x approaches 8-of 5/((x-8)^2)

解答

x \to 8 - lim (\frac{5}{( x - 8 ) ^{2}})

\infty

求解步骤

x \to 8 - lim (\frac{5}{( x - 8 ) ^{2}})

x

从左侧趋近于

8, x < 8 \Rightarrow (x - 8)^{2} > 0

分母从右侧趋近于 0，为正值

= \infty

s im pl i f y \frac{q x + r}{s x + t}

\int 4 x^{5} - 2 x^{3} + x - 2 d x

\frac{d}{d x} (\frac{x - x ^{2}}{1 + 3 x ^{2}})

\frac{d}{d x} (ln (x))

d er i v a t i v e f (x) = (3 x - 1) e^{- 6 x}