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Default for System (16649)
Test-Lidia
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Utilitzant el mètode de Gauss per a resoldre el sistema<br /><span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mfenced close=¨}¨ open=¨¨»«mtable»«mtr»«mtd»«mi»#p1«/mi»«mo»=«/mo»«mi»#d1«/mi»«/mtd»«/mtr»«mtr»«mtd»«mi»#p21«/mi»«mo»§nbsp;«/mo»«mo»=«/mo»«mo»§nbsp;«/mo»«mi»#d21«/mi»«/mtd»«/mtr»«mtr»«mtd»«mi»#p3«/mi»«mo»=«/mo»«mi»#d3«/mi»«/mtd»«/mtr»«/mtable»«/mfenced»«/math»</span><br />arribem a la sistema equivalent següent:<br /><span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mfenced close=¨}¨ open=¨¨»«mtable»«mtr»«mtd»«mi»#p1«/mi»«mo»=«/mo»«mi»#d1«/mi»«/mtd»«/mtr»«mtr»«mtd»«mi»#p2«/mi»«mo»§nbsp;«/mo»«mo»=«/mo»«mo»§nbsp;«/mo»«mi»#d2«/mi»«/mtd»«/mtr»«mtr»«mtd»«mn»0«/mn»«mo»=«/mo»«mi»#t«/mi»«/mtd»«/mtr»«/mtable»«/mfenced»«/math»</span><br />Això ens indica que el sistema és:<br />
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Choice 1
Answer
un sistema compatible determinat
Format
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Moodle auto-format
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Grade
None
100%
90%
83.33333%
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66.66667%
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16.66667%
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Feedback
Atenció, una equació del tipus 0 = #t és una expressió impossible, mai és certa.<br />
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Choice 2
Answer
un sistema compatible indeterminat
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Grade
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83.33333%
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66.66667%
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Feedback
Atenció, una equació del tipus 0 = #t és una expressió impossible, mai és certa.<br />
Format
HTML format
Moodle auto-format
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Choice 3
Answer
un sistema incompatible
Format
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Grade
None
100%
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83.33333%
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66.66667%
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Feedback
Molt bé, és un sistema incompatible ja que arribem a una expressió impossible <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mn»0«/mn»«mo»=«/mo»«mi»#t«/mi»«/math»</span>, a una igualtat que no és mai certa. Per tant, el sistema no té solució. <br />
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Choice 4
Answer
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None
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66.66667%
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Feedback
Choice 5
Answer
Grade
None
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83.33333%
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66.66667%
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33.33333%
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Feedback
Choice 6
Answer
Grade
None
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83.33333%
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Feedback
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33.33333%
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Created / last saved
Created
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Admin User
on
Wednesday, 12 June 2013, 1:03 PM
Last saved
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Admin User
on
Wednesday, 12 June 2013, 1:03 PM
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