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Default for System (16649)
Test-Lidia
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Question text
Donat el sistema d'inequacions:<br /><span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mfenced close=¨}¨ open=¨¨»«mtable»«mtr»«mtd»«mfrac»«mrow»«mi»#a1«/mi»«mo»·«/mo»«mi»x«/mi»«/mrow»«mi»#d«/mi»«/mfrac»«mo»§#10878;«/mo»«mi»#c1«/mi»«mo»+«/mo»«mi»x«/mi»«/mtd»«/mtr»«mtr»«mtd»«mi»#q«/mi»«mo»§#10878;«/mo»«mn»0«/mn»«/mtd»«/mtr»«/mtable»«/mfenced»«/math»</span><br /><br />indica quina de les següents és l'expressió, en forma d'interval, de la solució del sistema<br />
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A., B., C., ...
1., 2., 3., ...
i., ii., iii., ...
I., II., III., ...
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Choice 1
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
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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%
50%
40%
33.33333%
30%
25%
20%
16.66667%
14.28571%
12.5%
11.11111%
10%
5%
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-10%
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-12.5%
-14.28571%
-16.66667%
-20%
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-33.33333%
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Feedback
Atenció, els valors més grans que #a no són solució de la segona inequació.
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»#b«/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%
-5%
-10%
-11.11111%
-12.5%
-14.28571%
-16.66667%
-20%
-25%
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-33.33333%
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-66.66667%
-70%
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-83.33333%
-90%
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Feedback
Atenció, no tots els valors d'aquest interval són solució de la segona inequació.
Format
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Moodle auto-format
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Markdown format
Choice 3
Answer
«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mo»[«/mo»«mi»#b«/mi»«mo»,«/mo»«mi»#a«/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%
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-66.66667%
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-83.33333%
-90%
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Feedback
Molt bé. Aquesta és la solució del sistema.
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%
60%
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33.33333%
30%
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16.66667%
14.28571%
12.5%
11.11111%
10%
5%
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-12.5%
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-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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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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16.66667%
14.28571%
12.5%
11.11111%
10%
5%
-5%
-10%
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-12.5%
-14.28571%
-16.66667%
-20%
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-33.33333%
-40%
-50%
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-90%
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Feedback
Combined feedback
For any correct response
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For any partially correct response
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10%
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33.33333%
50%
100%
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Created / last saved
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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