limit as x approaches 1+of 4/((x-1)^3)

解答

x \to 1 + lim (\frac{4}{( x - 1 ) ^{3}})

\infty

求解步骤

x \to 1 + lim (\frac{4}{( x - 1 ) ^{3}})

x

从右侧趋近于

1, x > 1 \Rightarrow (x - 1)^{3} > 0

分母从右侧趋近于 0，为正值

= \infty

\int \frac{5}{1 - 9 x ^{2}} + 7 x d x

\frac{\partial}{\partial x} (y^{2} - 2 x y)

\frac{d}{d x} (\frac{x}{2})

t an g e n t f (x) = \frac{5}{x}, at x = 4, x = 5

d er i v a t i v e y = (9 x^{2} - 18 x + 18) e^{- 4 x}