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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
La suma de les seves arrels és #alfa
Grade
None
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83.33333%
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16.66667%
14.28571%
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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 a la suma de las raíces.
Choice 2
Answer
La suma 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%
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-66.66667%
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Feedback
Desasrrollando, 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, la suma de raíces es el coeficiente del término de grado 1 canviado de signo.
Choice 3
Answer
La suma de les seves arrels és #gamma
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%
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11.11111%
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-66.66667%
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-83.33333%
-90%
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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 verás que este coeficiente es el producto de las raíces.
Choice 4
Answer
Grade
None
100%
90%
83.33333%
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75%
70%
66.66667%
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33.33333%
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16.66667%
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-83.33333%
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Feedback
Choice 5
Answer
Grade
None
100%
90%
83.33333%
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70%
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%
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40%
33.33333%
30%
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16.66667%
14.28571%
12.5%
11.11111%
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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
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Penalty for each incorrect try
100%
50%
33.33333%
25%
20%
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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
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Created
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Admin User
on
Wednesday, 12 June 2013, 1:12 PM
Last saved
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Admin User
on
Wednesday, 12 June 2013, 1:12 PM
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