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Question name
Question text
<p><span style="font-weight: bold; color: #003300;">Resol l'equació: #e_1</span><br /><br /><br /><span style="font-weight: bold; color: #ff3300;">Format de la resposta: </span>{x=2,x=4}</p>
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No, case is unimportant
Yes, case must match
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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
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
Hint text
<p><strong>Fes el canvi de variable</strong> «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨12px¨»«mrow»«mi mathvariant=¨bold¨»t«/mi»«mo mathvariant=¨bold¨»=«/mo»«mo mathvariant=¨bold¨»#«/mo»«mi mathvariant=¨bold¨»b_«/mi»«msup»«mn mathvariant=¨bold¨»1«/mn»«mi mathvariant=¨bold¨»x«/mi»«/msup»«/mrow»«/mstyle»«/math»</p>
Hint 2
Hint text
<p>Si resols l'equació de 2n grau: #e2</p> <p>Has de trobar dues solucions en t que sumin #S i de producte #P</p> <p>Has de desfer el canvi de variable</p>
Hint 3
Hint text
<p>Per desfer el canvi de variable, has de resoldre: </p> <p> </p> <ul> <li>«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨12px¨»«mrow»«mo mathvariant=¨bold¨»#«/mo»«mi mathvariant=¨bold¨»b_«/mi»«msup»«mn mathvariant=¨bold¨»1«/mn»«mi mathvariant=¨bold¨»x«/mi»«/msup»«mo mathvariant=¨bold¨»=«/mo»«mo mathvariant=¨bold¨»#«/mo»«mi mathvariant=¨bold¨»S«/mi»«mn mathvariant=¨bold¨»1«/mn»«/mrow»«/mstyle»«/math»</li> <li>«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨12px¨»«mrow»«mo mathvariant=¨bold¨»#«/mo»«mi mathvariant=¨bold¨»b_«/mi»«msup»«mn mathvariant=¨bold¨»1«/mn»«mi mathvariant=¨bold¨»x«/mi»«/msup»«mo mathvariant=¨bold¨»=«/mo»«mo mathvariant=¨bold¨»#«/mo»«mi mathvariant=¨bold¨»S«/mi»«mn mathvariant=¨bold¨»2«/mn»«/mrow»«/mstyle»«/math»</li> </ul> <p> </p>
Created / last saved
Created
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Admin User
on
Thursday, 23 August 2018, 11:09 AM
Last saved
by
Admin User
on
Thursday, 23 August 2018, 11:09 AM
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