<item ident="C4-9124" title="C4 | Homogeneous second-order linear IVP | ver. 9124"> <itemmetadata> <qtimetadata> <qtimetadatafield> <fieldlabel>question_type</fieldlabel> <fieldentry>essay_question</fieldentry> </qtimetadatafield> </qtimetadata> </itemmetadata> <presentation> <material> <mattextxml> <div class="exercise-statement"> <p> <strong>C4.</strong> </p> <p>Explain how to find the particular solution to each given IVP.</p> <ol type="a"> <li> <p style="text-align:center;"> <img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?-{x''} - 4 \, {x} = 0 \hspace{2em} {x} (0)= 1 , {x} '(0)= 8" alt="-{x''} - 4 \, {x} = 0 \hspace{2em} {x} (0)= 1 , {x} '(0)= 8" title="-{x''} - 4 \, {x} = 0 \hspace{2em} {x} (0)= 1 , {x} '(0)= 8" data-latex="-{x''} - 4 \, {x} = 0 \hspace{2em} {x} (0)= 1 , {x} '(0)= 8"/> </p> </li> <li> <p style="text-align:center;"> <img style="border:1px #ddd solid;padding:5px;border-radius:5px;" src="https://latex.codecogs.com/svg.latex?-{y''} - 12 \, {y} = 7 \, {y'} \hspace{2em} {y} (0)= -1 , {y} '(0)= 2" alt="-{y''} - 12 \, {y} = 7 \, {y'} \hspace{2em} {y} (0)= -1 , {y} '(0)= 2" title="-{y''} - 12 \, {y} = 7 \, {y'} \hspace{2em} {y} (0)= -1 , {y} '(0)= 2" data-latex="-{y''} - 12 \, {y} = 7 \, {y'} \hspace{2em} {y} (0)= -1 , {y} '(0)= 2"/> </p> </li> </ol> </div> </mattextxml> <mattext texttype="text/html"><div class="exercise-statement"> <p> <strong>C4.</strong> </p> <p>Explain how to find the particular solution to each given IVP.</p> <ol type="a"> <li> <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-%204%20%5C,%20%7Bx%7D%20=%200%20%5Chspace%7B2em%7D%20%7Bx%7D%20(0)=%201%20,%20%7Bx%7D%20'(0)=%208" alt="-{x''} - 4 \, {x} = 0 \hspace{2em} {x} (0)= 1 , {x} '(0)= 8" title="-{x''} - 4 \, {x} = 0 \hspace{2em} {x} (0)= 1 , {x} '(0)= 8" data-latex="-{x''} - 4 \, {x} = 0 \hspace{2em} {x} (0)= 1 , {x} '(0)= 8"> </p> </li> <li> <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-%2012%20%5C,%20%7By%7D%20=%207%20%5C,%20%7By'%7D%20%5Chspace%7B2em%7D%20%7By%7D%20(0)=%20-1%20,%20%7By%7D%20'(0)=%202" alt="-{y''} - 12 \, {y} = 7 \, {y'} \hspace{2em} {y} (0)= -1 , {y} '(0)= 2" title="-{y''} - 12 \, {y} = 7 \, {y'} \hspace{2em} {y} (0)= -1 , {y} '(0)= 2" data-latex="-{y''} - 12 \, {y} = 7 \, {y'} \hspace{2em} {y} (0)= -1 , {y} '(0)= 2"> </p> </li> </ol> </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} = \cos\left(2 \, t\right) + 4 \, \sin\left(2 \, t\right)" alt="{x} = \cos\left(2 \, t\right) + 4 \, \sin\left(2 \, t\right)" title="{x} = \cos\left(2 \, t\right) + 4 \, \sin\left(2 \, t\right)" data-latex="{x} = \cos\left(2 \, t\right) + 4 \, \sin\left(2 \, 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} = -2 \, e^{\left(-3 \, t\right)} + e^{\left(-4 \, t\right)}" alt="{y} = -2 \, e^{\left(-3 \, t\right)} + e^{\left(-4 \, t\right)}" title="{y} = -2 \, e^{\left(-3 \, t\right)} + e^{\left(-4 \, t\right)}" data-latex="{y} = -2 \, e^{\left(-3 \, t\right)} + e^{\left(-4 \, 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?%7Bx%7D%20=%20%5Ccos%5Cleft(2%20%5C,%20t%5Cright)%20+%204%20%5C,%20%5Csin%5Cleft(2%20%5C,%20t%5Cright)" alt="{x} = \cos\left(2 \, t\right) + 4 \, \sin\left(2 \, t\right)" title="{x} = \cos\left(2 \, t\right) + 4 \, \sin\left(2 \, t\right)" data-latex="{x} = \cos\left(2 \, t\right) + 4 \, \sin\left(2 \, 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?%7By%7D%20=%20-2%20%5C,%20e%5E%7B%5Cleft(-3%20%5C,%20t%5Cright)%7D%20+%20e%5E%7B%5Cleft(-4%20%5C,%20t%5Cright)%7D" alt="{y} = -2 \, e^{\left(-3 \, t\right)} + e^{\left(-4 \, t\right)}" title="{y} = -2 \, e^{\left(-3 \, t\right)} + e^{\left(-4 \, t\right)}" data-latex="{y} = -2 \, e^{\left(-3 \, t\right)} + e^{\left(-4 \, t\right)}"> </p> </div> </mattext> </material> </flow_mat> </itemfeedback> </item>