<item ident="C5-5831" title="C5 | Non-homogeneous second-order linear ODE | ver. 5831"> <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?18 \, t e^{\left(3 \, t\right)} - {y''} + {y'} - 15 \, e^{\left(3 \, t\right)} = -12 \, {y}" alt="18 \, t e^{\left(3 \, t\right)} - {y''} + {y'} - 15 \, e^{\left(3 \, t\right)} = -12 \, {y}" title="18 \, t e^{\left(3 \, t\right)} - {y''} + {y'} - 15 \, e^{\left(3 \, t\right)} = -12 \, {y}" data-latex="18 \, t e^{\left(3 \, t\right)} - {y''} + {y'} - 15 \, e^{\left(3 \, t\right)} = -12 \, {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?18%20%5C,%20t%20e%5E%7B%5Cleft(3%20%5C,%20t%5Cright)%7D%20-%20%7By''%7D%20+%20%7By'%7D%20-%2015%20%5C,%20e%5E%7B%5Cleft(3%20%5C,%20t%5Cright)%7D%20=%20-12%20%5C,%20%7By%7D" alt="18 \, t e^{\left(3 \, t\right)} - {y''} + {y'} - 15 \, e^{\left(3 \, t\right)} = -12 \, {y}" title="18 \, t e^{\left(3 \, t\right)} - {y''} + {y'} - 15 \, e^{\left(3 \, t\right)} = -12 \, {y}" data-latex="18 \, t e^{\left(3 \, t\right)} - {y''} + {y'} - 15 \, e^{\left(3 \, t\right)} = -12 \, {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_{2} e^{\left(4 \, t\right)} - 3 \, t e^{\left(3 \, t\right)} + k_{1} e^{\left(-3 \, t\right)}" alt="{y} = k_{2} e^{\left(4 \, t\right)} - 3 \, t e^{\left(3 \, t\right)} + k_{1} e^{\left(-3 \, t\right)}" title="{y} = k_{2} e^{\left(4 \, t\right)} - 3 \, t e^{\left(3 \, t\right)} + k_{1} e^{\left(-3 \, t\right)}" data-latex="{y} = k_{2} e^{\left(4 \, t\right)} - 3 \, t e^{\left(3 \, t\right)} + k_{1} 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?%7By%7D%20=%20k_%7B2%7D%20e%5E%7B%5Cleft(4%20%5C,%20t%5Cright)%7D%20-%203%20%5C,%20t%20e%5E%7B%5Cleft(3%20%5C,%20t%5Cright)%7D%20+%20k_%7B1%7D%20e%5E%7B%5Cleft(-3%20%5C,%20t%5Cright)%7D" alt="{y} = k_{2} e^{\left(4 \, t\right)} - 3 \, t e^{\left(3 \, t\right)} + k_{1} e^{\left(-3 \, t\right)}" title="{y} = k_{2} e^{\left(4 \, t\right)} - 3 \, t e^{\left(3 \, t\right)} + k_{1} e^{\left(-3 \, t\right)}" data-latex="{y} = k_{2} e^{\left(4 \, t\right)} - 3 \, t e^{\left(3 \, t\right)} + k_{1} e^{\left(-3 \, t\right)}"> </p> </div> </mattext> </material> </flow_mat> </itemfeedback> </item>