limit as x approaches 4+of 5x^2+x

解答

x \to 4 + lim (5 x^{2} + x)

84

求解步骤

x \to 4 + lim (5 x^{2} + x)

代入值

x = 4

= 5 \cdot 4^{2} + 4

化简

= 84

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