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Test-Lidia
Question name
Question text
Determina el valor del parámetro "c" para que la ecuación de segundo grado siguiente tenga una única solución: <br /><br /><span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»#p«/mi»«mo»+«/mo»«mi»c«/mi»«mo»=«/mo»«mn»0«/mn»«/math»</span><br /><br /><span style="text-decoration: underline;">NOTACIÓ</span>N de la respuesta: escribe directamente el valor de la respuesta (NO escribir "c=")<br />
Default mark
General feedback
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
Muy bien.<br />
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
Atención, para este valor el discriminante es negativo, por tanto, para este valor del parámetro "c" la ecuación no tiene solución.
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
Atención para este valor el discriminante es positivo, por tanto, para este valor del parámetro "c" la ecuación tiene dos soluciones.
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
Settings for multiple tries
Penalty for each incorrect try
100%
50%
33.33333%
25%
20%
10%
0%
Hint 1
Hint text
Hint 2
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Created / last saved
Created
by
Admin User
on
Wednesday, 12 June 2013, 1:11 PM
Last saved
by
Admin User
on
Wednesday, 12 June 2013, 1:11 PM
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