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limit as x approaches 4-of (4+8)/2

解答

x \to 4 - lim (\frac{4 + 8}{2})

解答

6

求解步骤

x \to 4 - lim (\frac{4 + 8}{2})

x \to a lim c = c

= \frac{4 + 8}{2}

化简

= 6

作图

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