<item ident="C5-9755" title="C5 | Non-homogeneous second-order linear ODE | ver. 9755"> <itemmetadata> <qtimetadata> <qtimetadatafield> <fieldlabel>question_type</fieldlabel> <fieldentry>essay_question</fieldentry> </qtimetadatafield> </qtimetadata> </itemmetadata> <presentation> <material> <mattextxml> <div class="exercise-statement"> <p> <strong>C5.</strong> </p> <p>Explain how to find the general solution to the given ODE.</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''} - 2 \, {y'} - 7 \, \cos\left(2 \, t\right) + 4 \, \sin\left(2 \, t\right) = 3 \, {y}" alt="{y''} - 2 \, {y'} - 7 \, \cos\left(2 \, t\right) + 4 \, \sin\left(2 \, t\right) = 3 \, {y}" title="{y''} - 2 \, {y'} - 7 \, \cos\left(2 \, t\right) + 4 \, \sin\left(2 \, t\right) = 3 \, {y}" data-latex="{y''} - 2 \, {y'} - 7 \, \cos\left(2 \, t\right) + 4 \, \sin\left(2 \, t\right) = 3 \, {y}"/> </p> </div> </mattextxml> <mattext texttype="text/html"><div class="exercise-statement"> <p> <strong>C5.</strong> </p> <p>Explain how to find the general solution to the given ODE.</p> <p style="text-align:center;"> <img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?%7By''%7D%20-%202%20%5C,%20%7By'%7D%20-%207%20%5C,%20%5Ccos%5Cleft(2%20%5C,%20t%5Cright)%20+%204%20%5C,%20%5Csin%5Cleft(2%20%5C,%20t%5Cright)%20=%203%20%5C,%20%7By%7D" alt="{y''} - 2 \, {y'} - 7 \, \cos\left(2 \, t\right) + 4 \, \sin\left(2 \, t\right) = 3 \, {y}" title="{y''} - 2 \, {y'} - 7 \, \cos\left(2 \, t\right) + 4 \, \sin\left(2 \, t\right) = 3 \, {y}" data-latex="{y''} - 2 \, {y'} - 7 \, \cos\left(2 \, t\right) + 4 \, \sin\left(2 \, t\right) = 3 \, {y}"> </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?{y} = k_{1} e^{\left(3 \, t\right)} + k_{2} e^{\left(-t\right)} - \cos\left(2 \, t\right)" alt="{y} = k_{1} e^{\left(3 \, t\right)} + k_{2} e^{\left(-t\right)} - \cos\left(2 \, t\right)" title="{y} = k_{1} e^{\left(3 \, t\right)} + k_{2} e^{\left(-t\right)} - \cos\left(2 \, t\right)" data-latex="{y} = k_{1} e^{\left(3 \, t\right)} + k_{2} e^{\left(-t\right)} - \cos\left(2 \, 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?%7By%7D%20=%20k_%7B1%7D%20e%5E%7B%5Cleft(3%20%5C,%20t%5Cright)%7D%20+%20k_%7B2%7D%20e%5E%7B%5Cleft(-t%5Cright)%7D%20-%20%5Ccos%5Cleft(2%20%5C,%20t%5Cright)" alt="{y} = k_{1} e^{\left(3 \, t\right)} + k_{2} e^{\left(-t\right)} - \cos\left(2 \, t\right)" title="{y} = k_{1} e^{\left(3 \, t\right)} + k_{2} e^{\left(-t\right)} - \cos\left(2 \, t\right)" data-latex="{y} = k_{1} e^{\left(3 \, t\right)} + k_{2} e^{\left(-t\right)} - \cos\left(2 \, t\right)"> </p> </div> </mattext> </material> </flow_mat> </itemfeedback> </item>