limit as x approaches 3 of (2x+1)/(5x-2)

解答

x \to 3 lim (\frac{2 x + 1}{5 x - 2})

\frac{7}{13}

十进制

0.53846 \dots

求解步骤

x \to 3 lim (\frac{2 x + 1}{5 x - 2})

代入值

x = 3

= \frac{2 \cdot 3 + 1}{5 \cdot 3 - 2}

化简

= \frac{7}{13}

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x \to 3 lim (x^{2} - x^{2} cos (x))

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