limit as x approaches-2 of 2|x+2|

解答

x \to - 2 lim (2 ∣ x + 2 ∣)

0

求解步骤

x \to - 2 lim (2 ∣ x + 2 ∣)

代入值

x = - 2

= 2 ∣ - 2 + 2 ∣

化简

2 ∣ - 2 + 2 ∣ : 0

= 0

\frac{\partial}{\partial x} (ln (y + x))

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a re a 4 sin (x), 2 cos (x), [0, 0.8 π]