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Test-Lidia
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<p><span style="font-weight: bold; color: #003300;" data-mce-mark="1">Determina les solucions de: </span>«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mfenced mathcolor=¨#003300¨ open=¨{¨ close=¨}¨»«mtable»«mtr»«mtd»«mo mathvariant=¨bold¨»#«/mo»«mi mathvariant=¨bold¨»e«/mi»«mn mathvariant=¨bold¨»1«/mn»«/mtd»«/mtr»«mtr»«mtd»«mo mathvariant=¨bold¨»#«/mo»«mi mathvariant=¨bold¨»e«/mi»«mn mathvariant=¨bold¨»2«/mn»«/mtd»«/mtr»«/mtable»«/mfenced»«/mstyle»«/math»</p> <p><br /><strong><span style="color: #ff6600;" data-mce-mark="1">Format de la resposta: </span></strong>Si el sistema és </p> <ul> <li>compatible determinat: escriu la solució: {-21,11/15}</li> <li>compatible indeterminat: escriu 1</li> <li>incompatible, escriu 2</li> </ul>
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Answer 1
Answer
Grade
None
100%
90%
83.33333%
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66.66667%
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33.33333%
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16.66667%
14.28571%
12.5%
11.11111%
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Feedback
Answer 2
Answer
Grade
None
100%
90%
83.33333%
80%
75%
70%
66.66667%
60%
50%
40%
33.33333%
30%
25%
20%
16.66667%
14.28571%
12.5%
11.11111%
10%
5%
Feedback
Settings for multiple tries
Penalty for each incorrect try
100%
50%
33.33333%
25%
20%
10%
0%
Hint 1
Hint text
<p><strong><span style="color: #008000;" data-mce-mark="1">Per eliminar x, el mcm de #a11 i #a21 és #w1.</span></strong></p> <p><span style="color: #008000;" data-mce-mark="1"><strong>Així doncs, multipliquem</strong></span></p> <ul> <li><strong><span style="color: #008000;" data-mce-mark="1">la 1a per </span>«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mo mathvariant=¨bold¨ mathcolor=¨#007F00¨»#«/mo»«mi mathvariant=¨bold¨ mathcolor=¨#007F00¨»f«/mi»«mn mathvariant=¨bold¨ mathcolor=¨#007F00¨»1«/mn»«mo mathvariant=¨bold¨ mathcolor=¨#007F00¨»§#160;«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#007F00¨»§#8594;«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#007F00¨»§#8201;«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#007F00¨»#«/mo»«mi mathvariant=¨bold¨ mathcolor=¨#007F00¨»e«/mi»«mn mathvariant=¨bold¨ mathcolor=¨#007F00¨»21«/mn»«/math»</strong></li> <li><span style="color: #008000;" data-mce-mark="1"><strong>la 2a per «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mo mathvariant=¨bold¨ mathcolor=¨#007F00¨»#«/mo»«mi mathvariant=¨bold¨ mathcolor=¨#007F00¨»f«/mi»«mn mathvariant=¨bold¨ mathcolor=¨#007F00¨»2«/mn»«mo mathvariant=¨bold¨ mathcolor=¨#007F00¨»§#160;«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#007F00¨»§#8594;«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#007F00¨»#«/mo»«mi mathvariant=¨bold¨ mathcolor=¨#007F00¨»e«/mi»«mn mathvariant=¨bold¨ mathcolor=¨#007F00¨»22«/mn»«/math»</strong></span></li> </ul> <p><span style="color: #008000;"><strong>i com que #b1 i #b2 tenen signe #z1, #z2 per eliminar x.</strong></span></p> <p> </p>
Hint 2
Hint text
<p><span style="color: #008000;"><strong>Si trobem solució, el sistema és compatible determinat.</strong></span></p> <p><span style="color: #008000;"><strong>Si surt 0x+0y=0, el sistema és compatible indeterminat.</strong></span></p> <p><span style="color: #008000;"><strong>Si surt 0x+0y=No-zero el sistema és incompatible.</strong></span></p>
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Thursday, 23 August 2018, 11:09 AM
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