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Evaluate the following limit, writing your answer as either a number or using inf for ∞ if needed. lim𝑥→∞3−2𝑥56𝑥5+7=

Question

Evaluate the following limit, writing your answer as either a number or using inf for ∞ if needed. lim𝑥→∞3−2𝑥56𝑥5+7=

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Solution

Para evaluar el límite limx32x56x5+7\lim_{x \to \infty} \frac{3 - 2x^5}{6x^5 + 7}, sigamos estos pasos:

  1. Identificar los términos dominantes: Observamos que tanto en el numerador como en el denominador, los términos con x5x^5 son los que dominan cuando xx tiende a infinito.

  2. Simplificar la expresión: Dividimos tanto el numerador como el denominador por x5x^5:

    limx32x56x5+7=limx3x526+7x5 \lim_{x \to \infty} \frac{3 - 2x^5}{6x^5 + 7} = \lim_{x \to \infty} \frac{\frac{3}{x^5} - 2}{6 + \frac{7}{x^5}}

  3. Evaluar el límite de cada término: A medida que xx tiende a infinito, 3x5\frac{3}{x^5} y 7x5\frac{7}{x^5} tienden a 0.

    limx3x526+7x5=026+0=26=13 \lim_{x \to \infty} \frac{\frac{3}{x^5} - 2}{6 + \frac{7}{x^5}} = \frac{0 - 2}{6 + 0} = \frac{-2}{6} = -\frac{1}{3}

Por lo tanto, el valor del límite es 13-\frac{1}{3}.

This problem has been solved

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