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<p align="left">Calculeu x perquè els vectors <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mover accent="true"»«mi»u«/mi»«mo»§#8594;«/mo»«/mover»«/math»</span> i <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mover accent="true"»«mi»v«/mi»«mo»§#8594;«/mo»«/mover»«/math»</span> siguen perpendiculars:</p> <p align="center"></p> <div align="center"> <table width="569" align="center" style="width: 569px; height: 179px;" border="1"> <tbody> <tr> <td width="200" valign="top"> <p align="center"><span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mover accent="true"»«mi»u«/mi»«mo»§#8594;«/mo»«/mover»«mo»=«/mo»«mfenced»«mrow»«mi»x«/mi»«mo»,«/mo»«mn»2«/mn»«/mrow»«/mfenced»«/math»</span> <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mover accent="true"»«mi»v«/mi»«mo»§#8594;«/mo»«/mover»«mo»=«/mo»«mfenced»«mrow»«mn»2«/mn»«mo»,«/mo»«mn»1«/mn»«/mrow»«/mfenced»«/math»</span></p> </td> <td width="200" valign="top"> <p align="center"><span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mi»x«/mi»«mo»=«/mo»«/math»</span>{:SA:=-1}</p> </td> </tr> <tr> <td width="200" valign="top"> <p align="center"><span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mover accent="true"»«mi»u«/mi»«mo»§#8594;«/mo»«/mover»«mo»=«/mo»«mfenced»«mrow»«mi»x«/mi»«mo»+«/mo»«mn»2«/mn»«mo»,«/mo»«mo»-«/mo»«mn»1«/mn»«/mrow»«/mfenced»«/math»</span> <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mover accent="true"»«mi»v«/mi»«mo»§#8594;«/mo»«/mover»«mo»=«/mo»«mfenced»«mrow»«mn»2«/mn»«mo»,«/mo»«mi»x«/mi»«mo»-«/mo»«mn»1«/mn»«/mrow»«/mfenced»«/math»</span></p> </td> <td width="200" valign="top"> <p align="center"><span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mi»x«/mi»«mo»=«/mo»«/math»</span>{:SA:=-5}</p> </td> </tr> <tr> <td width="200" valign="top"> <p align="center"><span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mover accent="true"»«mi»u«/mi»«mo»§#8594;«/mo»«/mover»«mo»=«/mo»«mfenced»«mrow»«mi»x«/mi»«mo»,«/mo»«mo»-«/mo»«mn»3«/mn»«/mrow»«/mfenced»«/math»</span><span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mover accent="true"»«mi»v«/mi»«mo»§#8594;«/mo»«/mover»«mo»=«/mo»«mfenced»«mrow»«mn»2«/mn»«mi»x«/mi»«mo»-«/mo»«mn»1«/mn»«mo»,«/mo»«mn»2«/mn»«/mrow»«/mfenced»«/math»</span></p> </td> <td width="200" valign="top"> <p align="center"><span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mi»x«/mi»«mo»=«/mo»«/math»</span><span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mfrac»«mrow»«mo»-«/mo»«mn»3«/mn»«/mrow»«mn»2«/mn»«/mfrac»«/math»</span> i <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mi»x«/mi»«mo»=«/mo»«/math»</span>{:SA:=2}</p> </td> </tr> </tbody> </table></div>
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Monday, 12 August 2013, 9:04 AM
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