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<i><font face="times new roman,times,serif" size="4"> Dado el gráfico de la siguiente función<font size="4">:</font><br /><br />#graf<br /><br /><font size="4"><font size="4">D</font></font>onde el punto del lado izquierdo tiene coordenadas <span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»#p1«/mi»«/math»</span> y el de la derecha <span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»#p2«/mi»«/math»</span><font size="4">. <font size="4">E</font></font>ntonces<font size="4">,</font> el dominio es:</font></i><br />
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<i><font face="times new roman,times,serif" size="4">Solución:<br /><br />Recordemos lo siguiente:<br /><br />En una función <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mi»f«/mi»«mo»:«/mo»«mi»A«/mi»«mo»§#8594;«/mo»«mi»B«/mi»«/math»</span> el dominio de <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mi»f«/mi»«/math»</span> es un subconjunto de <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mi»A«/mi»«/math»</span>, el cual se representa en el eje horizontal.<br /><br />En la </font><font face="times new roman,times,serif" size="4">siguiente</font><font size="4"><font face="times new roman,times,serif"> gráfica, se muestra en color rojo la proyección de </font><font size="4"><font face="times new roman,times,serif">los puntos <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mi»#p1«/mi»«/math»</span> y <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mi»#p2«/mi»«/math»</span> sobre el eje hor</font></font></font><font size="4"><font size="4"><font size="4"><font face="times new roman,times,serif">izontal y con color verde el segmento que une los puntos proyectados sobre el eje horizontal.<br /><br />#ret<br /><br />Ahora, como el punto #pert, entonces vemos que el dominio corresponde a <br /><span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mi»#sol«/mi»«/math»</span></font> </font> <br /></font></font></i>
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Tuesday, 13 August 2013, 4:22 PM
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Tuesday, 13 August 2013, 4:22 PM
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