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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»§#10877;«/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»§lt;«/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»§#10878;«/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»§lt;«/mo»«mi»#b«/mi»«/math»</span><br /><br />Aleshores, la solució del sistema és: <br />
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a., b., c., ...
A., B., C., ...
1., 2., 3., ...
i., ii., iii., ...
I., II., III., ...
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Algorithm
Choice 1
Answer
«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mo»[«/mo»«mi»#a«/mi»«mo»,«/mo»«mi»#b«/mi»«mo»)«/mo»«/math»
Format
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Moodle auto-format
Plain text format
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Grade
None
100%
90%
83.33333%
80%
75%
70%
66.66667%
60%
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40%
33.33333%
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16.66667%
14.28571%
12.5%
11.11111%
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-16.66667%
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Feedback
Molt bé. Els valors de x més grans o iguals a #a que són menors que #b són solució del sistema.<br />
Format
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Moodle auto-format
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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%
-25%
-30%
-33.33333%
-40%
-50%
-60%
-66.66667%
-70%
-75%
-80%
-83.33333%
-90%
-100%
Feedback
Atenció, aquest interval correspon als valors de x tals que <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mi»x«/mi»«mo»§gt;«/mo»«mi»#a«/mi»«/math»</span> i <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mi»x«/mi»«mo»§#10877;«/mo»«mi»#b«/mi»«/math»</span>.<br />
Format
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Moodle auto-format
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Choice 3
Answer
«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mo»[«/mo»«mi»#a«/mi»«mo»,«/mo»«mi»#c«/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%
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Feedback
Atenció, aquest sistema té infinites solucions reals. #a i #c en són solucions enteres però cal tenir en compte els valors de x majors que #c i menors que #b.<br />
Format
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Moodle auto-format
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Choice 4
Answer
Grade
None
100%
90%
83.33333%
80%
75%
70%
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
Choice 5
Answer
Grade
None
100%
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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
100%
90%
83.33333%
80%
75%
70%
66.66667%
60%
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40%
33.33333%
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20%
16.66667%
14.28571%
12.5%
11.11111%
10%
5%
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-11.11111%
-12.5%
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-16.66667%
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Feedback
Combined feedback
For any correct response
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Markdown format
For any partially correct response
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Show the number of correct responses once the question has finished
For any incorrect response
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Settings for multiple tries
Penalty for each incorrect try
0%
10%
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33.33333%
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100%
Hint 1
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Clear incorrect responses
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Hint 2
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Created
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Wednesday, 12 June 2013, 1:04 PM
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Wednesday, 12 June 2013, 1:04 PM
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