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Donat el següent sistema d'inequacions<br /><span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mfenced close=¨}¨ open=¨¨»«mtable»«mtr»«mtd»«mn»0«/mn»«mo»§lt;«/mo»«mfrac»«mrow»«mi»x«/mi»«mo»+«/mo»«mi»#aux«/mi»«/mrow»«mi»#aux1«/mi»«/mfrac»«mo»-«/mo»«mfenced»«mi»#a1«/mi»«/mfenced»«/mtd»«/mtr»«mtr»«mtd»«mfrac»«mrow»«mi»#aux2«/mi»«mo»·«/mo»«mi»x«/mi»«/mrow»«mi»#aux«/mi»«/mfrac»«mo»-«/mo»«mn»1«/mn»«mo»§#10878;«/mo»«mfrac»«mi»#a2«/mi»«mi»#aux«/mi»«/mfrac»«mo»+«/mo»«mfrac»«mi»x«/mi»«mi»#aux«/mi»«/mfrac»«/mtd»«/mtr»«/mtable»«/mfenced»«/math»</span><br />resolem cadascuna de les inequacions per separat (pots practicar-ne la resolució i comprovar el resultat) i obtenim que la solució de la primera inequació és <br /><br /><span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»x«/mi»«mo»§gt;«/mo»«mi»#a«/mi»«/math»</span><br /><br />i la solució de la segona inequació és <br /><br /><span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»x«/mi»«mo»§#10878;«/mo»«mi»#b«/mi»«/math»</span><br /><br />Aleshores, la solució del sistema és: <br />
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a., b., c., ...
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Algorithm
Choice 1
Answer
«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mo»[«/mo»«mi»#b«/mi»«mo»,«/mo»«mo»+«/mo»«mo»§#8734;«/mo»«mo»)«/mo»«/math»
Format
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Moodle auto-format
Plain text format
Markdown format
Grade
None
100%
90%
83.33333%
80%
75%
70%
66.66667%
60%
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33.33333%
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16.66667%
14.28571%
12.5%
11.11111%
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5%
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-12.5%
-14.28571%
-16.66667%
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Feedback
Molt bé. Els valors de x més grans o iguals que #b satisfan ambues inequacions.
Format
HTML format
Moodle auto-format
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Markdown format
Choice 2
Answer
«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mo»(«/mo»«mi»#a«/mi»«mo»,«/mo»«mi»#b«/mi»«mo»]«/mo»«/math»
Format
HTML format
Moodle auto-format
Plain text format
Markdown format
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%
-5%
-10%
-11.11111%
-12.5%
-14.28571%
-16.66667%
-20%
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-30%
-33.33333%
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-66.66667%
-70%
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-83.33333%
-90%
-100%
Feedback
Atenció, els valors d'aquest interval satisfan la primera inequació però no la segona.
Format
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Moodle auto-format
Plain text format
Markdown format
Choice 3
Answer
«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mo»(«/mo»«mi»#a«/mi»«mo»,«/mo»«mo»+«/mo»«mo»§#8734;«/mo»«mo»)«/mo»«/math»
Format
HTML format
Moodle auto-format
Plain text format
Markdown format
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%
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-11.11111%
-12.5%
-14.28571%
-16.66667%
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Feedback
Atenció, en aquest interval hi ha inclosos els valors més grans que #a i menors que #b, que no satisfan la segona inequació.
Format
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Moodle auto-format
Plain text format
Markdown format
Choice 4
Answer
Grade
None
100%
90%
83.33333%
80%
75%
70%
66.66667%
60%
50%
40%
33.33333%
30%
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20%
16.66667%
14.28571%
12.5%
11.11111%
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-12.5%
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-66.66667%
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-83.33333%
-90%
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Feedback
Choice 5
Answer
Grade
None
100%
90%
83.33333%
80%
75%
70%
66.66667%
60%
50%
40%
33.33333%
30%
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16.66667%
14.28571%
12.5%
11.11111%
10%
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-12.5%
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-83.33333%
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Feedback
Choice 6
Answer
Grade
None
100%
90%
83.33333%
80%
75%
70%
66.66667%
60%
50%
40%
33.33333%
30%
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20%
16.66667%
14.28571%
12.5%
11.11111%
10%
5%
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-11.11111%
-12.5%
-14.28571%
-16.66667%
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-40%
-50%
-60%
-66.66667%
-70%
-75%
-80%
-83.33333%
-90%
-100%
Feedback
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10%
20%
25%
30%
33.33333%
50%
100%
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Created
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Wednesday, 12 June 2013, 1:04 PM
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on
Wednesday, 12 June 2013, 1:04 PM
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