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<h1>Solución</h1>
<p>Nosotros podemos calcular los límites directamente.</p>
<p class="apar">Apartado a</p>
<p>$$\mathop {\lim }\limits_{x \to  - {3^ - }} {1 \over {{{\left( {x + 3} \right)}^4}}} =  + \infty $$
</p><p class="apar">Apartado b</p>
<p>$$\mathop {\lim }\limits_{x \to  - {3^ + }} {1 \over {{{\left( {x + 3} \right)}^4}}} =  + \infty $$
</p><p class="apar">Apartado c</p>
<p>$$\mathop {\lim }\limits_{x \to  - 3} {1 \over {{{\left( {x + 3} \right)}^4}}} =  + \infty $$
</p><p>La función $f (x) =\frac{ 1} {(x + 3)^4}$ tiene una asíntota vertical de $x = -3$.


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