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<p> Donada la successió <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«msubsup»«mfenced close="}" open="{"»«mfrac»«mrow»«mo»-«/mo»«mn»4«/mn»«mi»n«/mi»«mo»+«/mo»«mn»7«/mn»«/mrow»«mrow»«mn»2«/mn»«mi»n«/mi»«/mrow»«/mfrac»«/mfenced»«mrow»«mi»n«/mi»«mo»=«/mo»«mn»1«/mn»«/mrow»«mo»§#8734;«/mo»«/msubsup»«/math»</span>, es demana:</p> <p>1. <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mi»l«/mi»«mo»=«/mo»«munder»«mi mathvariant="normal"»lim«/mi»«mrow»«mi»n«/mi»«mo»§#8594;«/mo»«mo»+«/mo»«mo»§#8734;«/mo»«/mrow»«/munder»«mfrac»«mrow»«mo»-«/mo»«mn»4«/mn»«mi»n«/mi»«mo»+«/mo»«mn»7«/mn»«/mrow»«mrow»«mn»2«/mn»«mi»n«/mi»«/mrow»«/mfrac»«mo»=«/mo»«/math»</span>{:SA:=-2}</p> <p>2. Que val <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«msub»«mi»n«/mi»«mn»0«/mn»«/msub»«/math»</span> de forma que si <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mi»n«/mi»«mo»§gt;«/mo»«msub»«mi»n«/mi»«mn»0«/mn»«/msub»«mo»§#8594;«/mo»«mfenced close="|" open="|"»«mrow»«mo»§nbsp;«/mo»«msub»«mi»a«/mi»«mi»n«/mi»«/msub»«mo»-«/mo»«mi»l«/mi»«mo»§nbsp;«/mo»«/mrow»«/mfenced»«mo»§lt;«/mo»«mn»0«/mn»«mo».«/mo»«mn»001«/mn»«/math»</span> </p> <p><span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«msub»«mi»n«/mi»«mn»0«/mn»«/msub»«mo»=«/mo»«/math»</span>{:SA:=3500}</p> <p></p>
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Monday, 12 August 2013, 9:04 AM
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