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Question text
Dado el polinomio p(x) = #p
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Si las raíces de un polinomio mónico (tal que el coeficiente de grado mayor es 1) de grado 2 son a y b, su descomposición en factores es <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mfenced»«mrow»«mi»x«/mi»«mo»-«/mo»«mi»a«/mi»«/mrow»«/mfenced»«mo»·«/mo»«mfenced»«mrow»«mi»x«/mi»«mo»-«/mo»«mi»b«/mi»«/mrow»«/mfenced»«/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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Algorithm
Choice 1
Answer
El producte de les seves arrels és #alfa
Grade
None
100%
90%
83.33333%
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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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-12.5%
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Feedback
Desarrolla y simplifica la expresión <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mfenced»«mrow»«mi»x«/mi»«mo»-«/mo»«mi»a«/mi»«/mrow»«/mfenced»«mo»·«/mo»«mfenced»«mrow»«mi»x«/mi»«mo»-«/mo»«mi»b«/mi»«/mrow»«/mfenced»«/math»</span> y sabrás qué término corresponde al producto de las raíces.
Choice 2
Answer
El producte de les seves arrels és #beta
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
Desarrollando, tenemos que <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mfenced»«mrow»«mi»x«/mi»«mo»-«/mo»«mi»a«/mi»«/mrow»«/mfenced»«mo»·«/mo»«mfenced»«mrow»«mi»x«/mi»«mo»-«/mo»«mi»b«/mi»«/mrow»«/mfenced»«mo»=«/mo»«msup»«mi»x«/mi»«mn»2«/mn»«/msup»«mo»-«/mo»«mo»(«/mo»«mi»a«/mi»«mo»+«/mo»«mi»b«/mi»«mo»)«/mo»«mi»x«/mi»«mo»+«/mo»«mi»a«/mi»«mo»·«/mo»«mi»b«/mi»«/math»</span>, entonces, el producto de las raíces es el término independente.
Choice 3
Answer
El producte de les seves arrels és #gamma
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%
-11.11111%
-12.5%
-14.28571%
-16.66667%
-20%
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-40%
-50%
-60%
-66.66667%
-70%
-75%
-80%
-83.33333%
-90%
-100%
Feedback
Desarrolla y simplifica la expresión <span class="nolink">«math xmlns="http://www.w3.org/1998/Math/MathML"»«mfenced»«mrow»«mi»x«/mi»«mo»-«/mo»«mi»a«/mi»«/mrow»«/mfenced»«mo»·«/mo»«mfenced»«mrow»«mi»x«/mi»«mo»-«/mo»«mi»b«/mi»«/mrow»«/mfenced»«/math»</span>, verás que en este caso el término no cambia de signo.
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%
10%
5%
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-16.66667%
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-66.66667%
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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%
25%
20%
16.66667%
14.28571%
12.5%
11.11111%
10%
5%
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-10%
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-14.28571%
-16.66667%
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-66.66667%
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-83.33333%
-90%
-100%
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%
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-66.66667%
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-80%
-83.33333%
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Feedback
Combined feedback
For any correct response
For any partially correct response
Options
Show the number of correct responses once the question has finished
For any incorrect response
Settings for multiple tries
Penalty for each incorrect try
100%
50%
33.33333%
25%
20%
10%
0%
Hint 1
Hint text
Options
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, 1:12 PM
Last saved
by
Admin User
on
Wednesday, 12 June 2013, 1:12 PM
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