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Test-Lidia
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Considerem la funció <span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»f«/mi»«mo»(«/mo»«mi»x«/mi»«mo»)«/mo»«mo»=«/mo»«msub»«mi»log«/mi»«mi»#a«/mi»«/msub»«mo»(«/mo»«mi»x«/mi»«mo»+«/mo»«mi»#a«/mi»«mo»)«/mo»«/math»</span>
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a., b., c., ...
A., B., C., ...
1., 2., 3., ...
i., ii., iii., ...
I., II., III., ...
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Choice 1
Answer
No talla l'eix d'ordenades perquè el domini de la funció logaritme són els reals positius i 0 no pertany al domini
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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-66.66667%
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-83.33333%
-90%
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Feedback
Atenció, la funció que considerem és la funció logaritme traslladada horitzontalment. Per saber si talla l'eix d'abscisses resol <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mi»f«/mi»«mo»(«/mo»«mi»x«/mi»«mo»)«/mo»«mo»=«/mo»«mn»0«/mn»«/math»</span> i per saber si talla l'eix d'ordenades calcula <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mi»f«/mi»«mo»(«/mo»«mn»0«/mn»«mo»)«/mo»«/math»</span>.
Choice 2
Answer
Talla l'eix d'ordenades en el punt (0,1)
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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-60%
-66.66667%
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-83.33333%
-90%
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Feedback
Molt bé, si calculem <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mi»f«/mi»«mo»(«/mo»«mn»0«/mn»«mo»)«/mo»«/math»</span> el resultat és 1.
Choice 3
Answer
Talla l'eix d'ordenades en el punt (0,#b)
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%
-5%
-10%
-11.11111%
-12.5%
-14.28571%
-16.66667%
-20%
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-66.66667%
-70%
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-83.33333%
-90%
-100%
Feedback
Atenció, el punt <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mo»(«/mo»«mi»#b«/mi»«mo»,«/mo»«mn»0«/mn»«mo»)«/mo»«/math»</span>, és el punt de tall de l'eix d'abscisses. #b és el resultat de resoldre f(x)=0, per tant és l'abscissa del punt.
Choice 4
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%
-5%
-10%
-11.11111%
-12.5%
-14.28571%
-16.66667%
-20%
-25%
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-33.33333%
-40%
-50%
-60%
-66.66667%
-70%
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-80%
-83.33333%
-90%
-100%
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%
5%
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-12.5%
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-16.66667%
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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%
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
Combined feedback
For any correct response
For any partially correct response
Options
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For any incorrect response
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Penalty for each incorrect try
0%
10%
20%
25%
30%
33.33333%
50%
100%
Hint 1
Hint text
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Clear incorrect responses
Show the number of correct responses
Hint 2
Hint text
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Clear incorrect responses
Show the number of correct responses
Created / last saved
Created
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Admin User
on
Wednesday, 12 June 2013, 1:04 PM
Last saved
by
Admin User
on
Wednesday, 12 June 2013, 1:04 PM
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