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Test-Lidia
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<p> Quina és la forma general dels vectors que són perpendiculars al vector <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»«mn»4«/mn»«mo»,«/mo»«mo»-«/mo»«mn»5«/mn»«/mrow»«/mfenced»«/math»</span> ?</p> <p>Si <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mover accent="true"»«mi»v«/mi»«mo»§#8594;«/mo»«/mover»«mo»§#8869;«/mo»«mover accent="true"»«mi»u«/mi»«mo»§#8594;«/mo»«/mover»«mo»§#8594;«/mo»«mover accent="true"»«mi»v«/mi»«mo»§#8594;«/mo»«/mover»«mo»=«/mo»«mi»§#955;«/mi»«mo»·«/mo»«/math»</span>( {:SA:=5} , 4 ) on <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mi»§#955;«/mi»«mo»§#8712;«/mo»«msup»«mi mathvariant="normal"»§#8477;«/mi»«mo»*«/mo»«/msup»«/math»</span></p>
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Monday, 12 August 2013, 9:04 AM
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