limit as x approaches-3 of (x+2)/(x-2)

解答

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

\frac{1}{5}

十进制

0.2

求解步骤

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

代入值

x = - 3

= \frac{- 3 + 2}{- 3 - 2}

化简

= \frac{1}{5}

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

\frac{d}{d a} (sec (a) \cdot tan (a) \cdot cos (a) \cdot csc (a))

\int \frac{e ^{9 x}}{e ^{9 x} + 1} d x

f (x) = sin (x + 1)

\int 3 y^{2} \frac{1}{2 y} tan (2 y x) d x