0000.qti

<item ident="V2-0000" title="V2 | Linear combinations | ver. 0000">
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  <presentation>
    <material>
      <mattextxml>
        <div class="exercise-statement">
          <p>
            <strong>V2.</strong>
          </p>
          <p>Consider the following statement.</p>
          <ul>
            <li> The vector <img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?\left[\begin{array}{c} -2 \\ -6 \\ -6 \\ -4 \end{array}\right]" alt="\left[\begin{array}{c} -2 \\ -6 \\ -6 \\ -4 \end{array}\right]" title="\left[\begin{array}{c} -2 \\ -6 \\ -6 \\ -4 \end{array}\right]" data-latex="\left[\begin{array}{c} -2 \\ -6 \\ -6 \\ -4 \end{array}\right]"/>is a linear combination of the vectors <img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?\left[\begin{array}{c} 3 \\ 2 \\ -5 \\ -3 \end{array}\right] , \left[\begin{array}{c} 0 \\ 1 \\ -3 \\ 1 \end{array}\right] , \text{ and } \left[\begin{array}{c} 4 \\ -3 \\ -3 \\ 0 \end{array}\right]" alt="\left[\begin{array}{c} 3 \\ 2 \\ -5 \\ -3 \end{array}\right] , \left[\begin{array}{c} 0 \\ 1 \\ -3 \\ 1 \end{array}\right] , \text{ and } \left[\begin{array}{c} 4 \\ -3 \\ -3 \\ 0 \end{array}\right]" title="\left[\begin{array}{c} 3 \\ 2 \\ -5 \\ -3 \end{array}\right] , \left[\begin{array}{c} 0 \\ 1 \\ -3 \\ 1 \end{array}\right] , \text{ and } \left[\begin{array}{c} 4 \\ -3 \\ -3 \\ 0 \end{array}\right]" data-latex="\left[\begin{array}{c} 3 \\ 2 \\ -5 \\ -3 \end{array}\right] , \left[\begin{array}{c} 0 \\ 1 \\ -3 \\ 1 \end{array}\right] , \text{ and } \left[\begin{array}{c} 4 \\ -3 \\ -3 \\ 0 \end{array}\right]"/>. </li>
          </ul>
          <ol type="a">
            <li> Write an equivalent statement using a vector equation.</li>
            <li> Explain why your statement is true or false.</li>
          </ol>
        </div>
      </mattextxml>
      <mattext texttype="text/html">&lt;div class="exercise-statement"&gt;
  &lt;p&gt;
    &lt;strong&gt;V2.&lt;/strong&gt;
  &lt;/p&gt;
  &lt;p&gt;Consider the following statement.&lt;/p&gt;
  &lt;ul&gt;
    &lt;li&gt; The vector &lt;img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D%20-2%20%5C%5C%20-6%20%5C%5C%20-6%20%5C%5C%20-4%20%5Cend%7Barray%7D%5Cright%5D" alt="\left[\begin{array}{c} -2 \\ -6 \\ -6 \\ -4 \end{array}\right]" title="\left[\begin{array}{c} -2 \\ -6 \\ -6 \\ -4 \end{array}\right]" data-latex="\left[\begin{array}{c} -2 \\ -6 \\ -6 \\ -4 \end{array}\right]"&gt;is a linear combination of the vectors &lt;img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D%203%20%5C%5C%202%20%5C%5C%20-5%20%5C%5C%20-3%20%5Cend%7Barray%7D%5Cright%5D%20,%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D%200%20%5C%5C%201%20%5C%5C%20-3%20%5C%5C%201%20%5Cend%7Barray%7D%5Cright%5D%20,%20%5Ctext%7B%20and%20%7D%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D%204%20%5C%5C%20-3%20%5C%5C%20-3%20%5C%5C%200%20%5Cend%7Barray%7D%5Cright%5D" alt="\left[\begin{array}{c} 3 \\ 2 \\ -5 \\ -3 \end{array}\right] , \left[\begin{array}{c} 0 \\ 1 \\ -3 \\ 1 \end{array}\right] , \text{ and } \left[\begin{array}{c} 4 \\ -3 \\ -3 \\ 0 \end{array}\right]" title="\left[\begin{array}{c} 3 \\ 2 \\ -5 \\ -3 \end{array}\right] , \left[\begin{array}{c} 0 \\ 1 \\ -3 \\ 1 \end{array}\right] , \text{ and } \left[\begin{array}{c} 4 \\ -3 \\ -3 \\ 0 \end{array}\right]" data-latex="\left[\begin{array}{c} 3 \\ 2 \\ -5 \\ -3 \end{array}\right] , \left[\begin{array}{c} 0 \\ 1 \\ -3 \\ 1 \end{array}\right] , \text{ and } \left[\begin{array}{c} 4 \\ -3 \\ -3 \\ 0 \end{array}\right]"&gt;. &lt;/li&gt;
  &lt;/ul&gt;
  &lt;ol type="a"&gt;
    &lt;li&gt; Write an equivalent statement using a vector equation.&lt;/li&gt;
    &lt;li&gt; Explain why your statement is true or false.&lt;/li&gt;
  &lt;/ol&gt;
&lt;/div&gt;

</mattext>
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        <response_label ident="answer1" rshuffle="No"/>
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  </presentation>
  <itemfeedback ident="general_fb">
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          <div class="exercise-answer">
            <h4>Partial Answer:</h4>
            <p style="text-align:center;">
              <img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?\operatorname{RREF} \left[\begin{array}{ccc|c} 3 &amp; 0 &amp; 4 &amp; -2 \\ 2 &amp; 1 &amp; -3 &amp; -6 \\ -5 &amp; -3 &amp; -3 &amp; -6 \\ -3 &amp; 1 &amp; 0 &amp; -4 \end{array}\right] = \left[\begin{array}{ccc|c} 1 &amp; 0 &amp; 0 &amp; 0 \\ 0 &amp; 1 &amp; 0 &amp; 0 \\ 0 &amp; 0 &amp; 1 &amp; 0 \\ 0 &amp; 0 &amp; 0 &amp; 1 \end{array}\right]" alt="\operatorname{RREF} \left[\begin{array}{ccc|c} 3 &amp; 0 &amp; 4 &amp; -2 \\ 2 &amp; 1 &amp; -3 &amp; -6 \\ -5 &amp; -3 &amp; -3 &amp; -6 \\ -3 &amp; 1 &amp; 0 &amp; -4 \end{array}\right] = \left[\begin{array}{ccc|c} 1 &amp; 0 &amp; 0 &amp; 0 \\ 0 &amp; 1 &amp; 0 &amp; 0 \\ 0 &amp; 0 &amp; 1 &amp; 0 \\ 0 &amp; 0 &amp; 0 &amp; 1 \end{array}\right]" title="\operatorname{RREF} \left[\begin{array}{ccc|c} 3 &amp; 0 &amp; 4 &amp; -2 \\ 2 &amp; 1 &amp; -3 &amp; -6 \\ -5 &amp; -3 &amp; -3 &amp; -6 \\ -3 &amp; 1 &amp; 0 &amp; -4 \end{array}\right] = \left[\begin{array}{ccc|c} 1 &amp; 0 &amp; 0 &amp; 0 \\ 0 &amp; 1 &amp; 0 &amp; 0 \\ 0 &amp; 0 &amp; 1 &amp; 0 \\ 0 &amp; 0 &amp; 0 &amp; 1 \end{array}\right]" data-latex="\operatorname{RREF} \left[\begin{array}{ccc|c} 3 &amp; 0 &amp; 4 &amp; -2 \\ 2 &amp; 1 &amp; -3 &amp; -6 \\ -5 &amp; -3 &amp; -3 &amp; -6 \\ -3 &amp; 1 &amp; 0 &amp; -4 \end{array}\right] = \left[\begin{array}{ccc|c} 1 &amp; 0 &amp; 0 &amp; 0 \\ 0 &amp; 1 &amp; 0 &amp; 0 \\ 0 &amp; 0 &amp; 1 &amp; 0 \\ 0 &amp; 0 &amp; 0 &amp; 1 \end{array}\right]"/>
            </p>
            <ol type="a">
              <li> The vector equation <img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?x_{1} \left[\begin{array}{c} 3 \\ 2 \\ -5 \\ -3 \end{array}\right] + x_{2} \left[\begin{array}{c} 0 \\ 1 \\ -3 \\ 1 \end{array}\right] + x_{3} \left[\begin{array}{c} 4 \\ -3 \\ -3 \\ 0 \end{array}\right] = \left[\begin{array}{c} -2 \\ -6 \\ -6 \\ -4 \end{array}\right]" alt="x_{1} \left[\begin{array}{c} 3 \\ 2 \\ -5 \\ -3 \end{array}\right] + x_{2} \left[\begin{array}{c} 0 \\ 1 \\ -3 \\ 1 \end{array}\right] + x_{3} \left[\begin{array}{c} 4 \\ -3 \\ -3 \\ 0 \end{array}\right] = \left[\begin{array}{c} -2 \\ -6 \\ -6 \\ -4 \end{array}\right]" title="x_{1} \left[\begin{array}{c} 3 \\ 2 \\ -5 \\ -3 \end{array}\right] + x_{2} \left[\begin{array}{c} 0 \\ 1 \\ -3 \\ 1 \end{array}\right] + x_{3} \left[\begin{array}{c} 4 \\ -3 \\ -3 \\ 0 \end{array}\right] = \left[\begin{array}{c} -2 \\ -6 \\ -6 \\ -4 \end{array}\right]" data-latex="x_{1} \left[\begin{array}{c} 3 \\ 2 \\ -5 \\ -3 \end{array}\right] + x_{2} \left[\begin{array}{c} 0 \\ 1 \\ -3 \\ 1 \end{array}\right] + x_{3} \left[\begin{array}{c} 4 \\ -3 \\ -3 \\ 0 \end{array}\right] = \left[\begin{array}{c} -2 \\ -6 \\ -6 \\ -4 \end{array}\right]"/>has a solution.</li>
              <li>
                <p><img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?\left[\begin{array}{c} -2 \\ -6 \\ -6 \\ -4 \end{array}\right]" alt="\left[\begin{array}{c} -2 \\ -6 \\ -6 \\ -4 \end{array}\right]" title="\left[\begin{array}{c} -2 \\ -6 \\ -6 \\ -4 \end{array}\right]" data-latex="\left[\begin{array}{c} -2 \\ -6 \\ -6 \\ -4 \end{array}\right]"/> is not a linear combination of the vectors <img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?\left[\begin{array}{c} 3 \\ 2 \\ -5 \\ -3 \end{array}\right] , \left[\begin{array}{c} 0 \\ 1 \\ -3 \\ 1 \end{array}\right] , \text{ and } \left[\begin{array}{c} 4 \\ -3 \\ -3 \\ 0 \end{array}\right]" alt="\left[\begin{array}{c} 3 \\ 2 \\ -5 \\ -3 \end{array}\right] , \left[\begin{array}{c} 0 \\ 1 \\ -3 \\ 1 \end{array}\right] , \text{ and } \left[\begin{array}{c} 4 \\ -3 \\ -3 \\ 0 \end{array}\right]" title="\left[\begin{array}{c} 3 \\ 2 \\ -5 \\ -3 \end{array}\right] , \left[\begin{array}{c} 0 \\ 1 \\ -3 \\ 1 \end{array}\right] , \text{ and } \left[\begin{array}{c} 4 \\ -3 \\ -3 \\ 0 \end{array}\right]" data-latex="\left[\begin{array}{c} 3 \\ 2 \\ -5 \\ -3 \end{array}\right] , \left[\begin{array}{c} 0 \\ 1 \\ -3 \\ 1 \end{array}\right] , \text{ and } \left[\begin{array}{c} 4 \\ -3 \\ -3 \\ 0 \end{array}\right]"/>. </p>
              </li>
            </ol>
          </div>
        </mattextxml>
        <mattext texttype="text/html">&lt;div class="exercise-answer"&gt;
  &lt;h4&gt;Partial Answer:&lt;/h4&gt;
  &lt;p style="text-align:center;"&gt;
    &lt;img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?%5Coperatorname%7BRREF%7D%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7Cc%7D%203%20&amp;amp;%200%20&amp;amp;%204%20&amp;amp;%20-2%20%5C%5C%202%20&amp;amp;%201%20&amp;amp;%20-3%20&amp;amp;%20-6%20%5C%5C%20-5%20&amp;amp;%20-3%20&amp;amp;%20-3%20&amp;amp;%20-6%20%5C%5C%20-3%20&amp;amp;%201%20&amp;amp;%200%20&amp;amp;%20-4%20%5Cend%7Barray%7D%5Cright%5D%20=%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7Cc%7D%201%20&amp;amp;%200%20&amp;amp;%200%20&amp;amp;%200%20%5C%5C%200%20&amp;amp;%201%20&amp;amp;%200%20&amp;amp;%200%20%5C%5C%200%20&amp;amp;%200%20&amp;amp;%201%20&amp;amp;%200%20%5C%5C%200%20&amp;amp;%200%20&amp;amp;%200%20&amp;amp;%201%20%5Cend%7Barray%7D%5Cright%5D" alt="\operatorname{RREF} \left[\begin{array}{ccc|c} 3 &amp;amp; 0 &amp;amp; 4 &amp;amp; -2 \\ 2 &amp;amp; 1 &amp;amp; -3 &amp;amp; -6 \\ -5 &amp;amp; -3 &amp;amp; -3 &amp;amp; -6 \\ -3 &amp;amp; 1 &amp;amp; 0 &amp;amp; -4 \end{array}\right] = \left[\begin{array}{ccc|c} 1 &amp;amp; 0 &amp;amp; 0 &amp;amp; 0 \\ 0 &amp;amp; 1 &amp;amp; 0 &amp;amp; 0 \\ 0 &amp;amp; 0 &amp;amp; 1 &amp;amp; 0 \\ 0 &amp;amp; 0 &amp;amp; 0 &amp;amp; 1 \end{array}\right]" title="\operatorname{RREF} \left[\begin{array}{ccc|c} 3 &amp;amp; 0 &amp;amp; 4 &amp;amp; -2 \\ 2 &amp;amp; 1 &amp;amp; -3 &amp;amp; -6 \\ -5 &amp;amp; -3 &amp;amp; -3 &amp;amp; -6 \\ -3 &amp;amp; 1 &amp;amp; 0 &amp;amp; -4 \end{array}\right] = \left[\begin{array}{ccc|c} 1 &amp;amp; 0 &amp;amp; 0 &amp;amp; 0 \\ 0 &amp;amp; 1 &amp;amp; 0 &amp;amp; 0 \\ 0 &amp;amp; 0 &amp;amp; 1 &amp;amp; 0 \\ 0 &amp;amp; 0 &amp;amp; 0 &amp;amp; 1 \end{array}\right]" data-latex="\operatorname{RREF} \left[\begin{array}{ccc|c} 3 &amp;amp; 0 &amp;amp; 4 &amp;amp; -2 \\ 2 &amp;amp; 1 &amp;amp; -3 &amp;amp; -6 \\ -5 &amp;amp; -3 &amp;amp; -3 &amp;amp; -6 \\ -3 &amp;amp; 1 &amp;amp; 0 &amp;amp; -4 \end{array}\right] = \left[\begin{array}{ccc|c} 1 &amp;amp; 0 &amp;amp; 0 &amp;amp; 0 \\ 0 &amp;amp; 1 &amp;amp; 0 &amp;amp; 0 \\ 0 &amp;amp; 0 &amp;amp; 1 &amp;amp; 0 \\ 0 &amp;amp; 0 &amp;amp; 0 &amp;amp; 1 \end{array}\right]"&gt;
  &lt;/p&gt;
  &lt;ol type="a"&gt;
    &lt;li&gt; The vector equation &lt;img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?x_%7B1%7D%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D%203%20%5C%5C%202%20%5C%5C%20-5%20%5C%5C%20-3%20%5Cend%7Barray%7D%5Cright%5D%20+%20x_%7B2%7D%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D%200%20%5C%5C%201%20%5C%5C%20-3%20%5C%5C%201%20%5Cend%7Barray%7D%5Cright%5D%20+%20x_%7B3%7D%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D%204%20%5C%5C%20-3%20%5C%5C%20-3%20%5C%5C%200%20%5Cend%7Barray%7D%5Cright%5D%20=%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D%20-2%20%5C%5C%20-6%20%5C%5C%20-6%20%5C%5C%20-4%20%5Cend%7Barray%7D%5Cright%5D" alt="x_{1} \left[\begin{array}{c} 3 \\ 2 \\ -5 \\ -3 \end{array}\right] + x_{2} \left[\begin{array}{c} 0 \\ 1 \\ -3 \\ 1 \end{array}\right] + x_{3} \left[\begin{array}{c} 4 \\ -3 \\ -3 \\ 0 \end{array}\right] = \left[\begin{array}{c} -2 \\ -6 \\ -6 \\ -4 \end{array}\right]" title="x_{1} \left[\begin{array}{c} 3 \\ 2 \\ -5 \\ -3 \end{array}\right] + x_{2} \left[\begin{array}{c} 0 \\ 1 \\ -3 \\ 1 \end{array}\right] + x_{3} \left[\begin{array}{c} 4 \\ -3 \\ -3 \\ 0 \end{array}\right] = \left[\begin{array}{c} -2 \\ -6 \\ -6 \\ -4 \end{array}\right]" data-latex="x_{1} \left[\begin{array}{c} 3 \\ 2 \\ -5 \\ -3 \end{array}\right] + x_{2} \left[\begin{array}{c} 0 \\ 1 \\ -3 \\ 1 \end{array}\right] + x_{3} \left[\begin{array}{c} 4 \\ -3 \\ -3 \\ 0 \end{array}\right] = \left[\begin{array}{c} -2 \\ -6 \\ -6 \\ -4 \end{array}\right]"&gt;has a solution.&lt;/li&gt;
    &lt;li&gt;
      &lt;p&gt;&lt;img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D%20-2%20%5C%5C%20-6%20%5C%5C%20-6%20%5C%5C%20-4%20%5Cend%7Barray%7D%5Cright%5D" alt="\left[\begin{array}{c} -2 \\ -6 \\ -6 \\ -4 \end{array}\right]" title="\left[\begin{array}{c} -2 \\ -6 \\ -6 \\ -4 \end{array}\right]" data-latex="\left[\begin{array}{c} -2 \\ -6 \\ -6 \\ -4 \end{array}\right]"&gt; is not a linear combination of the vectors &lt;img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D%203%20%5C%5C%202%20%5C%5C%20-5%20%5C%5C%20-3%20%5Cend%7Barray%7D%5Cright%5D%20,%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D%200%20%5C%5C%201%20%5C%5C%20-3%20%5C%5C%201%20%5Cend%7Barray%7D%5Cright%5D%20,%20%5Ctext%7B%20and%20%7D%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D%204%20%5C%5C%20-3%20%5C%5C%20-3%20%5C%5C%200%20%5Cend%7Barray%7D%5Cright%5D" alt="\left[\begin{array}{c} 3 \\ 2 \\ -5 \\ -3 \end{array}\right] , \left[\begin{array}{c} 0 \\ 1 \\ -3 \\ 1 \end{array}\right] , \text{ and } \left[\begin{array}{c} 4 \\ -3 \\ -3 \\ 0 \end{array}\right]" title="\left[\begin{array}{c} 3 \\ 2 \\ -5 \\ -3 \end{array}\right] , \left[\begin{array}{c} 0 \\ 1 \\ -3 \\ 1 \end{array}\right] , \text{ and } \left[\begin{array}{c} 4 \\ -3 \\ -3 \\ 0 \end{array}\right]" data-latex="\left[\begin{array}{c} 3 \\ 2 \\ -5 \\ -3 \end{array}\right] , \left[\begin{array}{c} 0 \\ 1 \\ -3 \\ 1 \end{array}\right] , \text{ and } \left[\begin{array}{c} 4 \\ -3 \\ -3 \\ 0 \end{array}\right]"&gt;. &lt;/p&gt;
    &lt;/li&gt;
  &lt;/ol&gt;
&lt;/div&gt;

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