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 <question type="category"><category><text>1rBTX 04. FUNCIONS/1.4.4 Exponencial i logaritme/1.4.4.2 Logarítme</text></category></question>
 
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      <text>1.4.4.2.10 DT DEFINICIÓ DEL  LOGARITME</text>
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      <text><![CDATA[<table style="background-image: none; color: #003300; border: 4px solid #003300; float: none; text-align: left; vertical-align: top; margin-left: auto; margin-right: auto; background-color: #ffffcc; width: 396px; height: 160px;" border="4" frame="void" rules="none">
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<td style="background-color: #003300; background-image: none; color: #ffffcc; border-color: #003300; border-width: 4px; vertical-align: top; border-style: solid;" valign="top" width="NaNpx"><span style="font-size: large;">Definició del logaritme</span></td>
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<p><span style="color: #003300; font-size: medium;">El logaritme en base a del nombre x és l'exponent y al qual cal elevar la base a per calcular x:</span></p>
<p><span style="color: #003300; font-size: medium;">                   </span><span style="color: #003300; font-size: medium;">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«msub mathcolor=¨#003300¨»«mi mathvariant=¨bold¨ mathcolor=¨#003300¨»log«/mi»«mi mathvariant=¨bold¨»a«/mi»«/msub»«mi mathvariant=¨bold¨ mathcolor=¨#003300¨»x«/mi»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»§#160;«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»=«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»§#160;«/mo»«mi mathvariant=¨bold¨ mathcolor=¨#003300¨»y«/mi»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»§#160;«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»§#8660;«/mo»«mi mathvariant=¨bold¨ mathcolor=¨#003300¨»x«/mi»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»§#160;«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»=«/mo»«msup mathcolor=¨#003300¨»«mi mathvariant=¨bold¨ mathcolor=¨#003300¨»a«/mi»«mi mathvariant=¨bold¨»y«/mi»«/msup»«/math»</span><span style="color: #003300; font-size: medium;">   <br /></span></p>
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