limit as x approaches 2 of (x^3-8)/(2x)

解答

x \to 2 lim (\frac{x ^{3} - 8}{2 x})

0

求解步骤

x \to 2 lim (\frac{x ^{3} - 8}{2 x})

代入值

x = 2

= \frac{2 ^{3} - 8}{2 \cdot 2}

化简

= 0

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

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

\frac{d}{d x} (e^{x^{2} + y^{2}})

\frac{d}{d x} (0.005 x^{2} - ln (x^{16}) + 70)

d er i v a t i v e y = \frac{6 x ^{2} + 8 x + 2}{x}