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<p><span style="font-weight: bold; color: #003300;">Resol: #e <span style="font-size: medium;">> 0</span></span><br /><br /><span style="font-weight: bold; color: #ff6600;">Format de la resposta:</span></p> <p>Entre dos nombres: «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mn»2«/mn»«mo»§lt;«/mo»«mi»x«/mi»«mo»§#8743;«/mo»«mi»x«/mi»«mo»§lt;«/mo»«mn»5«/mn»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»(«/mo»«mo»§#8743;«/mo»«mo»=«/mo»«mi»i«/mi»«mo»)«/mo»«/math»</p> <p>Altra situació: «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»x«/mi»«mo»§lt;«/mo»«mo»-«/mo»«mn»2«/mn»«mo»§#8744;«/mo»«mi»x«/mi»«mo»§#62;«/mo»«mn»5«/mn»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»(«/mo»«mo»§#8744;«/mo»«mo»=«/mo»«mi»o«/mi»«mo»)«/mo»«/math»</p>
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<p><span style="font-size: medium; color: #0000ff;"><strong>#e > 0 «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mo»§#8660;«/mo»«/math» #sol</strong></span></p>
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
<p><span style="font-weight: bold; color: #cc0099;"> </span></p>
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><span style="color: #0000ff;"><strong>Primer es resol l'equació de 2n grau.</strong></span></p> <p><strong><span style="color: #008000;"><span style="color: #0000ff;">el discriminant és #d i les solucions són #x_1 i #x_2.</span> </span></strong></p> <p><span style="color: #ff0000;"><strong>(ES COMPROVEN AMB S = #S1 I P = #P1)</strong></span></p> <p><span style="color: #0000ff;"><strong>Després es fa la taula.</strong></span></p>
Hint 2
Hint text
<p><strong><span style="color: #008000;" data-mce-mark="1"><span style="color: #0000ff;">La taula és:</span> <br /></span></strong></p> <div style="text-align: center;"><br /><br /> <table style="background-color: #ffffcc; background-image: none; color: #000066; border: 4px solid #000066; float: none; text-align: left; vertical-align: top; width: 400px;" border="1" frame="void" rules="none" cellspacing="1" cellpadding="1" align="center"> <tbody> <tr> <td style="background-image: none; border-color: #000066; border-width: 2px; text-align: left; vertical-align: top; border-style: solid;" rowspan="1" colspan="6" valign="top" width="NaNpx"> <p><span style="font-size: small; color: #0000ff;" data-mce-mark="1"><strong>Com que a és #r1,</strong></span></p> <p><span style="font-size: small; color: #0000ff;" data-mce-mark="1"><strong>#e és #r2 (signe de a), #r4, per x<#x_1 <span style="text-decoration: underline; font-size: medium;">o</span> per x>#x_2</strong></span></p> <p><span style="font-size: small; color: #0000ff;"><strong>#e és #r3 (signe contrari de a), #r5, per #x_1<x <span style="text-decoration: underline;"><span style="font-size: medium;">i</span></span> per x<#x_2</strong></span></p> </td> </tr> <tr> <td style="background-image: none; border-color: #000066; border-width: 2px; text-align: left; vertical-align: top; border-style: solid;" valign="top" width="NaNpx"><span style="font-size: small; color: #008000;" data-mce-mark="1">x</span></td> <td style="background-image: none; border-color: #000066; border-width: 2px; text-align: left; vertical-align: top; border-style: solid;" valign="top" width="NaNpx"><span style="font-size: small; color: #008000;" data-mce-mark="1">-∞</span></td> <td style="background-image: none; border-color: #000066; border-width: 2px; text-align: center; vertical-align: top; border-style: solid; background-color: #ff0000; color: #ffffff;" valign="top" width="NaNpx"><span style="font-size: small; color: #ffffff;" data-mce-mark="1"><strong>#x_1</strong></span></td> <td style="background-image: none; border-color: #000066; border-width: 2px; text-align: right; vertical-align: top; border-style: solid;" align="right" valign="top" width="NaNpx"><span style="font-size: small; color: #008000;" data-mce-mark="1"> </span></td> <td style="background-color: #ff0000; background-image: none; color: #ffffff; border-color: #000066; border-width: 2px; text-align: center; vertical-align: top; border-style: solid;"><span style="font-size: small; color: #ffffff;" data-mce-mark="1"><strong>#x_2</strong></span></td> <td style="background-image: none; border-color: #000066; border-width: 2px; text-align: right; vertical-align: top; border-style: solid;"><span style="font-size: small; color: #008000;" data-mce-mark="1">+∞</span></td> </tr> <tr> <td style="background-image: none; border-color: #000066; border-width: 2px; text-align: left; vertical-align: top; border-style: solid;" valign="top" width="NaNpx"><span style="font-size: small; color: #008000;" data-mce-mark="1">#e</span></td> <td style="background-image: none; border-color: #000066; border-width: 2px; text-align: center; vertical-align: top; border-style: solid;" align="center" valign="top" width="NaNpx"><span style="font-size: small; color: #008000;" data-mce-mark="1">#s1</span></td> <td style="background-image: none; border-color: #000066; border-width: 2px; text-align: center; vertical-align: top; border-style: solid; background-color: #ff0000; color: #ffffff;" align="center" valign="top" width="NaNpx"><span style="font-size: small; color: #ffffff;" data-mce-mark="1"><strong>0</strong></span></td> <td style="background-image: none; border-color: #000066; border-width: 2px; text-align: center; vertical-align: top; border-style: solid;" align="center" valign="top" width="NaNpx"><span style="font-size: small; color: #008000;" data-mce-mark="1">#s2</span></td> <td style="background-color: #ff0000; background-image: none; color: #ffffff; border-color: #000066; border-width: 2px; text-align: center; vertical-align: top; border-style: solid;"><span style="font-size: small; color: #ffffff;" data-mce-mark="1">0</span></td> <td style="background-image: none; border-color: #000066; border-width: 2px; text-align: center; vertical-align: top; border-style: solid;"><span style="font-size: small; color: #008000;" data-mce-mark="1">#s1</span></td> </tr> </tbody> </table> <div align="center"><br /><br /></div> <br /><br /></div>
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