<item ident="X1-3192" title="X1 | Linear ODE systems | ver. 3192"> <itemmetadata> <qtimetadata> <qtimetadatafield> <fieldlabel>question_type</fieldlabel> <fieldentry>essay_question</fieldentry> </qtimetadatafield> </qtimetadata> </itemmetadata> <presentation> <material> <mattextxml> <div class="exercise-statement"> <p> <strong>X1.</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?-{x'} = -{y} - 4 \, {x} \hspace{2em}x(0)= -2" alt="-{x'} = -{y} - 4 \, {x} \hspace{2em}x(0)= -2" title="-{x'} = -{y} - 4 \, {x} \hspace{2em}x(0)= -2" data-latex="-{x'} = -{y} - 4 \, {x} \hspace{2em}x(0)= -2"/> </p> <p style="text-align:center;"> <img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?7 \, {y} + 4 \, {x} = {y'} \hspace{2em}x(0)= -3" alt="7 \, {y} + 4 \, {x} = {y'} \hspace{2em}x(0)= -3" title="7 \, {y} + 4 \, {x} = {y'} \hspace{2em}x(0)= -3" data-latex="7 \, {y} + 4 \, {x} = {y'} \hspace{2em}x(0)= -3"/> </p> </div> </mattextxml> <mattext texttype="text/html"><div class="exercise-statement"> <p> <strong>X1.</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?-%7Bx'%7D%20=%20-%7By%7D%20-%204%20%5C,%20%7Bx%7D%20%5Chspace%7B2em%7Dx(0)=%20-2" alt="-{x'} = -{y} - 4 \, {x} \hspace{2em}x(0)= -2" title="-{x'} = -{y} - 4 \, {x} \hspace{2em}x(0)= -2" data-latex="-{x'} = -{y} - 4 \, {x} \hspace{2em}x(0)= -2"> </p> <p style="text-align:center;"> <img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?7%20%5C,%20%7By%7D%20+%204%20%5C,%20%7Bx%7D%20=%20%7By'%7D%20%5Chspace%7B2em%7Dx(0)=%20-3" alt="7 \, {y} + 4 \, {x} = {y'} \hspace{2em}x(0)= -3" title="7 \, {y} + 4 \, {x} = {y'} \hspace{2em}x(0)= -3" data-latex="7 \, {y} + 4 \, {x} = {y'} \hspace{2em}x(0)= -3"> </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 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(8 \, t\right)} - e^{\left(3 \, t\right)}" alt="x= -e^{\left(8 \, t\right)} - e^{\left(3 \, t\right)}" title="x= -e^{\left(8 \, t\right)} - e^{\left(3 \, t\right)}" data-latex="x= -e^{\left(8 \, t\right)} - e^{\left(3 \, 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= -4 \, e^{\left(8 \, t\right)} + e^{\left(3 \, t\right)}" alt="y= -4 \, e^{\left(8 \, t\right)} + e^{\left(3 \, t\right)}" title="y= -4 \, e^{\left(8 \, t\right)} + e^{\left(3 \, t\right)}" data-latex="y= -4 \, e^{\left(8 \, t\right)} + e^{\left(3 \, 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=%20-e%5E%7B%5Cleft(8%20%5C,%20t%5Cright)%7D%20-%20e%5E%7B%5Cleft(3%20%5C,%20t%5Cright)%7D" alt="x= -e^{\left(8 \, t\right)} - e^{\left(3 \, t\right)}" title="x= -e^{\left(8 \, t\right)} - e^{\left(3 \, t\right)}" data-latex="x= -e^{\left(8 \, t\right)} - e^{\left(3 \, 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=%20-4%20%5C,%20e%5E%7B%5Cleft(8%20%5C,%20t%5Cright)%7D%20+%20e%5E%7B%5Cleft(3%20%5C,%20t%5Cright)%7D" alt="y= -4 \, e^{\left(8 \, t\right)} + e^{\left(3 \, t\right)}" title="y= -4 \, e^{\left(8 \, t\right)} + e^{\left(3 \, t\right)}" data-latex="y= -4 \, e^{\left(8 \, t\right)} + e^{\left(3 \, t\right)}"> </p> </div> </mattext> </material> </flow_mat> </itemfeedback> </item>