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Test-Lidia
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De les següents matrius, quina és la inversa de la matriu #A? a) #detA · #mat1, b) #detA · #mat2, c) #detA · #mat3, d) #detA · #mat4<br />
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<table width="100%" cellpadding="3" border="0" bgcolor="red"><tbody> <tr> <td><font color="white"><b>Recorda que cal trasposar la matriu i calcular l'adjunta, en la qual alguns elements canvien de signe i d'altres no.</b></font> </td> </tr></tbody> </table>
No, case is unimportant
Yes, case must match
Correct answers
You must provide at least one possible answer. The first matching answer will be used to determine the score and feedback. Click the icon next to the answer field to edit the mathematical properties of the answer and the question.
Answer 1
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
Perfecte!
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
Això és la matriu oposada, no la inversa.
Answer 3
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
El càlcul de la inversa és més complex que no només fer els inversos dels elements de la matriu.
Answer 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%
Feedback
T'has oblidat de transposar la matriu!
Answer 5
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
Perfecte!
Answer 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%
Feedback
Settings for multiple tries
Penalty for each incorrect try
100%
50%
33.33333%
25%
20%
10%
0%
Hint 1
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Hint 2
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Created / last saved
Created
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Admin User
on
Monday, 15 July 2013, 9:10 AM
Last saved
by
Admin User
on
Monday, 15 July 2013, 9:10 AM
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