<item ident="G3-0003" title="G3 | Eigenvalues | ver. 0003"> <itemmetadata> <qtimetadata> <qtimetadatafield> <fieldlabel>question_type</fieldlabel> <fieldentry>essay_question</fieldentry> </qtimetadatafield> </qtimetadata> </itemmetadata> <presentation> <material> <mattextxml> <div class="exercise-statement"> <p> <strong>G3.</strong> </p> <p>Explain how to find the eigenvalues of the matrix <img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?\left[\begin{array}{cc} 8 & 2 \\ -15 & -3 \end{array}\right]" alt="\left[\begin{array}{cc} 8 & 2 \\ -15 & -3 \end{array}\right]" title="\left[\begin{array}{cc} 8 & 2 \\ -15 & -3 \end{array}\right]" data-latex="\left[\begin{array}{cc} 8 & 2 \\ -15 & -3 \end{array}\right]"/>.</p> </div> </mattextxml> <mattext texttype="text/html"><div class="exercise-statement"> <p> <strong>G3.</strong> </p> <p>Explain how to find the eigenvalues of the matrix <img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?%5Cleft%5B%5Cbegin%7Barray%7D%7Bcc%7D%208%20&amp;%202%20%5C%5C%20-15%20&amp;%20-3%20%5Cend%7Barray%7D%5Cright%5D" alt="\left[\begin{array}{cc} 8 &amp; 2 \\ -15 &amp; -3 \end{array}\right]" title="\left[\begin{array}{cc} 8 &amp; 2 \\ -15 &amp; -3 \end{array}\right]" data-latex="\left[\begin{array}{cc} 8 &amp; 2 \\ -15 &amp; -3 \end{array}\right]">.</p> </div> </mattext> </material> <response_str ident="response1" rcardinality="Single"> <render_fib> <response_label ident="answer1" rshuffle="No"/> </render_fib> </response_str> </presentation> <itemfeedback ident="general_fb"> <flow_mat> <material> <mattextxml> <div class="exercise-answer"> <h4>Partial Answer:</h4> <p>The characteristic polynomial of <img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?\left[\begin{array}{cc} 8 & 2 \\ -15 & -3 \end{array}\right]" alt="\left[\begin{array}{cc} 8 & 2 \\ -15 & -3 \end{array}\right]" title="\left[\begin{array}{cc} 8 & 2 \\ -15 & -3 \end{array}\right]" data-latex="\left[\begin{array}{cc} 8 & 2 \\ -15 & -3 \end{array}\right]"/> is <img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?\lambda^{2} - 5 \lambda + 6" alt="\lambda^{2} - 5 \lambda + 6" title="\lambda^{2} - 5 \lambda + 6" data-latex="\lambda^{2} - 5 \lambda + 6"/>.</p> <p>The eigenvalues of <img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?\left[\begin{array}{cc} 8 & 2 \\ -15 & -3 \end{array}\right]" alt="\left[\begin{array}{cc} 8 & 2 \\ -15 & -3 \end{array}\right]" title="\left[\begin{array}{cc} 8 & 2 \\ -15 & -3 \end{array}\right]" data-latex="\left[\begin{array}{cc} 8 & 2 \\ -15 & -3 \end{array}\right]"/> are <img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?2" alt="2" title="2" data-latex="2"/> and <img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?3" alt="3" title="3" data-latex="3"/>.</p> </div> </mattextxml> <mattext texttype="text/html"><div class="exercise-answer"> <h4>Partial Answer:</h4> <p>The characteristic polynomial of <img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?%5Cleft%5B%5Cbegin%7Barray%7D%7Bcc%7D%208%20&amp;%202%20%5C%5C%20-15%20&amp;%20-3%20%5Cend%7Barray%7D%5Cright%5D" alt="\left[\begin{array}{cc} 8 &amp; 2 \\ -15 &amp; -3 \end{array}\right]" title="\left[\begin{array}{cc} 8 &amp; 2 \\ -15 &amp; -3 \end{array}\right]" data-latex="\left[\begin{array}{cc} 8 &amp; 2 \\ -15 &amp; -3 \end{array}\right]"> is <img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?%5Clambda%5E%7B2%7D%20-%205%20%5Clambda%20+%206" alt="\lambda^{2} - 5 \lambda + 6" title="\lambda^{2} - 5 \lambda + 6" data-latex="\lambda^{2} - 5 \lambda + 6">.</p> <p>The eigenvalues of <img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?%5Cleft%5B%5Cbegin%7Barray%7D%7Bcc%7D%208%20&amp;%202%20%5C%5C%20-15%20&amp;%20-3%20%5Cend%7Barray%7D%5Cright%5D" alt="\left[\begin{array}{cc} 8 &amp; 2 \\ -15 &amp; -3 \end{array}\right]" title="\left[\begin{array}{cc} 8 &amp; 2 \\ -15 &amp; -3 \end{array}\right]" data-latex="\left[\begin{array}{cc} 8 &amp; 2 \\ -15 &amp; -3 \end{array}\right]"> are <img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?2" alt="2" title="2" data-latex="2"> and <img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?3" alt="3" title="3" data-latex="3">.</p> </div> </mattext> </material> </flow_mat> </itemfeedback> </item>