limit as x approaches-2-of (x^2-4)/(x+2)

解答

x \to - 2 - lim (\frac{x ^{2} - 4}{x + 2})

- 4

求解步骤

x \to - 2 - lim (\frac{x ^{2} - 4}{x + 2})

化简

\frac{x ^{2} - 4}{x + 2} : x - 2

= x \to - 2 - lim (x - 2)

代入值

x = - 2

= - 2 - 2

化简

= - 4

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

x \to 0 lim (\frac{π}{x})

t an g e n t f (x) = x x^{2} + 21

\int_{- e}^{0} e^{2 x} d x

\int 3 (x ln (x)) d x