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 <question type="category"><category><text>Categoria per defecte en Batxillerat/Vectors</text></category></question>
 
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 <question type="cloze">
    <name><text>PE8</text>
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    <questiontext>
<text><![CDATA[<p> Quina és la forma general dels vectors que són perpendiculars al vector <span class="nolink">«math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;»«mover accent=&quot;true&quot;»«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=&quot;http://www.w3.org/1998/Math/MathML&quot;»«mover accent=&quot;true&quot;»«mi»v«/mi»«mo»§#8594;«/mo»«/mover»«mo»§#8869;«/mo»«mover accent=&quot;true&quot;»«mi»u«/mi»«mo»§#8594;«/mo»«/mover»«mo»§#8594;«/mo»«mover accent=&quot;true&quot;»«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=&quot;http://www.w3.org/1998/Math/MathML&quot;»«mi»§#955;«/mi»«mo»§#8712;«/mo»«msup»«mi mathvariant=&quot;normal&quot;»§#8477;«/mi»«mo»*«/mo»«/msup»«/math»</span></p>]]></text>
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