endbehavior 2x^3-26x-24

解答

末端趋向

2 x^{3} - 26 x - 24

当 x \to + \infty, f (x) \to + \infty ；当 x \to - \infty, f (x) \to - \infty

求解步骤

2 x^{3} - 26 x - 24

的定义域

: - \infty < x < \infty

x \to \infty lim (2 x^{3} - 26 x - 24) = \infty

当 x \to + \infty, f (x) \to + \infty

x \to - \infty lim (2 x^{3} - 26 x - 24) = - \infty

当 x \to - \infty, f (x) \to - \infty

当 x \to + \infty, f (x) \to + \infty ；当 x \to - \infty, f (x) \to - \infty