limit as x approaches infinity of 8-2x

解答

x \to \infty lim (8 - 2 x)

- \infty

求解步骤

x \to \infty lim (8 - 2 x)

运用无穷大属性:

x \to \infty lim (a x^{n} + \dots + b x + c) = - \infty, a < 0,

n is odd

a = - 2, n = 1

= - \infty

\frac{\partial}{\partial y} (x^{2} + y^{2} - 1)

\frac{d}{d x} (- \frac{14}{x ^{6}})

e x p an d 4 (2 t - 5)^{2}

\int x^{2} \cdot x^{2} - 9 d x

\frac{d P}{d t} = 0.5 (P) (1 - \frac{P}{1000})