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<p>Discuteix el sistema de 3 equacions i 3 incògnites, «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mfenced open=¨{¨ close=¨¨»«mtable columnalign=¨left¨»«mtr»«mtd»«mo»#«/mo»«mi»l«/mi»«mn»1«/mn»«/mtd»«/mtr»«mtr»«mtd»«mo»#«/mo»«mi»l«/mi»«mn»2«/mn»«/mtd»«/mtr»«mtr»«mtd»«mo»#«/mo»«mi»l«/mi»«mn»3«/mn»«/mtd»«/mtr»«/mtable»«/mfenced»«/math» <span style="line-height: 1.4;">segons el valor del paràmetre m.</span></p> <p><span style="line-height: 1.4;">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mfenced open=¨|¨ close=¨|¨»«mi»A«/mi»«/mfenced»«mo»=«/mo»«/math» </span><span style="line-height: 1.4;"> {:SA:=\#a}</span></p> <p style="padding-left: 30px;"><span style="line-height: 1.4;">Si «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»m«/mi»«mo»§#8800;«/mo»«/math» {:SA:=\#ms}</span></p> <p style="padding-left: 60px;"><span style="line-height: 1.4;">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»r«/mi»«mi»a«/mi»«mi»n«/mi»«mi»g«/mi»«mo»(«/mo»«mi»A«/mi»«mo»)«/mo»«mo»=«/mo»«/math» {:SA:=\#ra1}<br /></span></p> <p style="padding-left: 60px;"><span style="line-height: 1.4;">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»r«/mi»«mi»a«/mi»«mi»n«/mi»«mi»g«/mi»«mo»(«/mo»«mi»A«/mi»«mi»B«/mi»«mo»)«/mo»«mo»=«/mo»«/math» {:SA:=\#rab1}<br /></span></p> <p style="padding-left: 60px;"><span style="line-height: 1.4;">per tant es tracta {:MC:=\#ts11~\#ts12~\#ts13} i {:MC:=\#gl11~\#gl12~\#gl13~\#gl14} graus de llibertat</span></p> <p style="padding-left: 30px;"><span style="line-height: 1.4;">si «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»m«/mi»«mo»=«/mo»«/math» {:SA:=\#ms}</span></p> <p style="padding-left: 60px;"><span>«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»r«/mi»«mi»a«/mi»«mi»n«/mi»«mi»g«/mi»«mo»(«/mo»«mi»A«/mi»«mo»)«/mo»«mo»=«/mo»«/math» {:SA:=\#ra2}<br /></span></p> <p style="padding-left: 60px;"><span>«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»r«/mi»«mi»a«/mi»«mi»n«/mi»«mi»g«/mi»«mo»(«/mo»«mi»A«/mi»«mi»B«/mi»«mo»)«/mo»«mo»=«/mo»«/math» {:SA:=\#rab2}<br /></span></p> <p style="padding-left: 60px;">per tant es tracta {:MC:=\#ts21~\#ts22~\#ts23} i {:MC:=\#gl21~\#gl22~\#gl23~\#gl24} graus de llibertat</p> <p><span>Soluciona el sistema en el cas que «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»m«/mi»«mo»=«/mo»«mo»#«/mo»«mi»v«/mi»«mi»r«/mi»«/math».</span></p> <ul> <li><span style="line-height: 1.4;">Si es tracta d'un sistema compatible indeterminat les variables que han de passar a fer de constants han de seguir l'ordre invers de l'alfabet, primer la z, ...</span></li> </ul> <p style="padding-left: 30px;"><span>x = </span><span style="line-height: 1.4;"> {:MC:=\#sx1~\#sx2~\#sx3~\#sx4}</span></p> <p style="padding-left: 30px;"><span>y = {:MC:=\#sy1~\#sy2~\#sy3~\#sy4}<br /></span></p> <p style="padding-left: 30px;"><span>z = {:MC:=\#sz1~\#sz2~\#sz3~\#sz4}</span></p> <p><span style="line-height: 1.4;"> </span></p>
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