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Considera el polinomi <math xmlns="http://www.w3.org/1998/Math/MathML"><mi></mi><mo></mo><span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»p«/mi»«mo»(«/mo»«mi»x«/mi»«mo»)«/mo»«mo»=«/mo»«mi»#a1«/mi»«mo»·«/mo»«mo»(«/mo»«mi»x«/mi»«mo»-«/mo»«mi»b«/mi»«msup»«mo»)«/mo»«mn»2«/mn»«/msup»«mo»·«/mo»«mo»(«/mo»«mi»#p2«/mi»«mo»)«/mo»«/math»</span> </math>. Sabem que el coeficient del terme de grau 1 de la derivada d'aquest polinomi és <span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»#coeficient«/mi»«/math»</span>. Quin és el valor de <span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»b«/mi»«/math»</span>?<br /><br />Notació: dóna el valor numèric.
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La derivada del polinomi és <span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»#r«/mi»«/math»</span>, i el terme de grau 1 d'aquest polinomi és <span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»#eq«/mi»«/math»</span>, i volem que sigui <span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»#coeficient«/mi»«/math»</span>. Per tant, hem de resoldre l'equació <span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»#eq«/mi»«mo»=«/mo»«mi»#coeficient«/mi»«/math»</span>, i la solució és <span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»b«/mi»«mo»=«/mo»«mi»#c«/mi»«/math»</span>
No, case is unimportant
Yes, case must match
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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
Molt bé.
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
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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Wednesday, 12 June 2013, 1:04 PM
Last saved
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Admin User
on
Wednesday, 12 June 2013, 1:04 PM
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