<item ident="S2-2012" title="S2 | Linear ODE system with elimination | ver. 2012">
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<presentation>
<material>
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<div class="exercise-statement">
<p>
<strong>S2.</strong>
</p>
<p>Find the solution to the given system of IVPs.</p>
<p style="text-align:center;">
<img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?2 \, {x} + {x'} = -3 \, {y} \hspace{2em}x(0)= 4" alt="2 \, {x} + {x'} = -3 \, {y} \hspace{2em}x(0)= 4" title="2 \, {x} + {x'} = -3 \, {y} \hspace{2em}x(0)= 4" data-latex="2 \, {x} + {x'} = -3 \, {y} \hspace{2em}x(0)= 4"/>
</p>
<p style="text-align:center;">
<img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?-3 \, {y} + {y'} = -12 \, {x} \hspace{2em}x(0)= 1" alt="-3 \, {y} + {y'} = -12 \, {x} \hspace{2em}x(0)= 1" title="-3 \, {y} + {y'} = -12 \, {x} \hspace{2em}x(0)= 1" data-latex="-3 \, {y} + {y'} = -12 \, {x} \hspace{2em}x(0)= 1"/>
</p>
</div>
</mattextxml>
<mattext texttype="text/html"><div class="exercise-statement">
<p>
<strong>S2.</strong>
</p>
<p>Find the solution to the given system of IVPs.</p>
<p style="text-align:center;">
<img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?2%20%5C,%20%7Bx%7D%20+%20%7Bx'%7D%20=%20-3%20%5C,%20%7By%7D%20%5Chspace%7B2em%7Dx(0)=%204" alt="2 \, {x} + {x'} = -3 \, {y} \hspace{2em}x(0)= 4" title="2 \, {x} + {x'} = -3 \, {y} \hspace{2em}x(0)= 4" data-latex="2 \, {x} + {x'} = -3 \, {y} \hspace{2em}x(0)= 4">
</p>
<p style="text-align:center;">
<img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?-3%20%5C,%20%7By%7D%20+%20%7By'%7D%20=%20-12%20%5C,%20%7Bx%7D%20%5Chspace%7B2em%7Dx(0)=%201" alt="-3 \, {y} + {y'} = -12 \, {x} \hspace{2em}x(0)= 1" title="-3 \, {y} + {y'} = -12 \, {x} \hspace{2em}x(0)= 1" data-latex="-3 \, {y} + {y'} = -12 \, {x} \hspace{2em}x(0)= 1">
</p>
</div>
</mattext>
</material>
<response_str ident="response1" rcardinality="Single">
<render_fib>
<response_label ident="answer1" rshuffle="No"/>
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<itemfeedback ident="general_fb">
<flow_mat>
<material>
<mattextxml>
<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?x= e^{\left(7 \, t\right)} + 3 \, e^{\left(-6 \, t\right)}" alt="x= e^{\left(7 \, t\right)} + 3 \, e^{\left(-6 \, t\right)}" title="x= e^{\left(7 \, t\right)} + 3 \, e^{\left(-6 \, t\right)}" data-latex="x= e^{\left(7 \, t\right)} + 3 \, e^{\left(-6 \, t\right)}"/>
</p>
<p style="text-align:center;">
<img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?y= -3 \, e^{\left(7 \, t\right)} + 4 \, e^{\left(-6 \, t\right)}" alt="y= -3 \, e^{\left(7 \, t\right)} + 4 \, e^{\left(-6 \, t\right)}" title="y= -3 \, e^{\left(7 \, t\right)} + 4 \, e^{\left(-6 \, t\right)}" data-latex="y= -3 \, e^{\left(7 \, t\right)} + 4 \, e^{\left(-6 \, t\right)}"/>
</p>
</div>
</mattextxml>
<mattext texttype="text/html"><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?x=%20e%5E%7B%5Cleft(7%20%5C,%20t%5Cright)%7D%20+%203%20%5C,%20e%5E%7B%5Cleft(-6%20%5C,%20t%5Cright)%7D" alt="x= e^{\left(7 \, t\right)} + 3 \, e^{\left(-6 \, t\right)}" title="x= e^{\left(7 \, t\right)} + 3 \, e^{\left(-6 \, t\right)}" data-latex="x= e^{\left(7 \, t\right)} + 3 \, e^{\left(-6 \, t\right)}">
</p>
<p style="text-align:center;">
<img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?y=%20-3%20%5C,%20e%5E%7B%5Cleft(7%20%5C,%20t%5Cright)%7D%20+%204%20%5C,%20e%5E%7B%5Cleft(-6%20%5C,%20t%5Cright)%7D" alt="y= -3 \, e^{\left(7 \, t\right)} + 4 \, e^{\left(-6 \, t\right)}" title="y= -3 \, e^{\left(7 \, t\right)} + 4 \, e^{\left(-6 \, t\right)}" data-latex="y= -3 \, e^{\left(7 \, t\right)} + 4 \, e^{\left(-6 \, t\right)}">
</p>
</div>
</mattext>
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