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<document xmlns="http://cnx.rice.edu/cnxml" xmlns:md="http://cnx.rice.edu/mdml/0.4" xmlns:bib="http://bibtexml.sf.net/" xmlns:m="http://www.w3.org/1998/Math/MathML" id="new">
  <name xmlns:md="http://cnx.rice.edu/mdml/0.4" xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/">A Problem for MATLAB's Symbolic Computation</name>
  <metadata xmlns:md="http://cnx.rice.edu/mdml/0.4" xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/">
  <md:version xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/">1.1</md:version>
  <md:created xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/">2006/10/25 13:43:52.134 GMT-5</md:created>
  <md:revised xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/">2006/10/31 09:53:27.124 US/Central</md:revised>
  <md:authorlist xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/">
      <md:author xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/" id="morrell">
      <md:firstname xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/">Darryl </md:firstname>
      
      <md:surname xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/">Morrell</md:surname>
      <md:email xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/">morrell@asu.edu</md:email>
    </md:author>
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    <md:maintainer xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/" id="morrell">
      <md:firstname xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/">Darryl </md:firstname>
      
      <md:surname xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/">Morrell</md:surname>
      <md:email xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/">morrell@asu.edu</md:email>
    </md:maintainer>
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  <md:keywordlist xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/">
    <md:keyword xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/">MATLAB</md:keyword>
    <md:keyword xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/">Symbolic Computation</md:keyword>
  </md:keywordlist>

  <md:abstract xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/">This module contains a problem that can be solved using MATLAB's symbolic computation capabilities.</md:abstract>
</metadata>
<content xmlns:md="http://cnx.rice.edu/mdml/0.4" xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/">
    <exercise xmlns:md="http://cnx.rice.edu/mdml/0.4" xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/" id="ex1">
        <problem xmlns:md="http://cnx.rice.edu/mdml/0.4" xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/">
            <para xmlns:md="http://cnx.rice.edu/mdml/0.4" xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/" id="bob1">
                Consider the following problem.  Vehicle 1 and Vehicle 2 each move in a straight line.  At time 
                <m:math>
                    <m:apply>
                        <m:eq/>
                        <m:ci>t</m:ci>
                        <m:cn>0</m:cn>
                    </m:apply>
                </m:math>,
                Vehicle 1 starts from position 0 with initial velocity 0 and constant acceleration <m:math><m:ci>a</m:ci></m:math>.  At the same time, Vehicle 2 starts from position
                <m:math>
                    <m:ci>
                      <m:msub>
                        <m:mi>s</m:mi>
                        <m:mn>0</m:mn>
                      </m:msub>
                    </m:ci>
                </m:math>
                and travels with constant velocity <m:math><m:ci>v</m:ci></m:math>.  The position of Vehicle 1 is given by the equation
                <equation xmlns:md="http://cnx.rice.edu/mdml/0.4" xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/" id="eq1">
                    <m:math>
                        <m:apply>
                            <m:eq/>
                            <m:ci>s</m:ci>
                            <m:apply>
                                <m:times/>
                                <m:apply>
                                    <m:divide/>
                                    <m:cn>1</m:cn>
                                    <m:cn>2</m:cn>
                                </m:apply>
                                <m:ci>a</m:ci>
                                <m:apply>
                                    <m:power/>
                                    <m:ci>t</m:ci>
                                    <m:cn>2</m:cn>
                                </m:apply>
                            </m:apply>
                        </m:apply>
                    </m:math>
                </equation>
                The position of Vehicle 2 is given by the equation
                <equation xmlns:md="http://cnx.rice.edu/mdml/0.4" xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/" id="eq2">
                    <m:math>
                        <m:apply>
                            <m:eq/>
                            <m:ci>s</m:ci>
                            <m:apply>
                                <m:plus/>
                                <m:apply>
                                    <m:times/>
                                    <m:ci>v</m:ci>
                                    <m:ci>t</m:ci>
                                </m:apply>
                                <m:ci>
                                  <m:msub>
                                    <m:mi>s</m:mi>
                                    <m:mn>0</m:mn>
                                  </m:msub>
                                </m:ci>
                            </m:apply>
                        </m:apply>
                    </m:math>
                </equation>
            </para>
            <para xmlns:md="http://cnx.rice.edu/mdml/0.4" xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/" id="bob2">
                For given values of 
                <m:math>
                    <m:ci>a</m:ci>
                </m:math>, 
                <m:math>
                    <m:ci>v</m:ci>
                </m:math>, 
                and 
                <m:math>
                    <m:ci>
                        <m:msub>
                            <m:mi>s</m:mi>
                            <m:mn>0</m:mn>
                        </m:msub>
                    </m:ci>
                </m:math>,
                at what time 
                <m:math>
                    <m:ci>t</m:ci>
                </m:math>
                will Vehicle 1 to overtake Vehicle 2?  At what position will this happen?  Plot your solution for 
                <m:math>
                    <m:ci>t</m:ci>
                </m:math>
                as a function of 
                <m:math>
                    <m:ci>a</m:ci>
                </m:math>
                with 
                <m:math>
                    <m:apply>
                        <m:eq/>
                        <m:ci>v</m:ci>
                        <m:cn>80 ft/s</m:cn>  
                    </m:apply>
                </m:math>
                and
                <m:math>
                    <m:apply>
                        <m:eq/>
                        <m:ci>
                            <m:msub>
                                <m:mi>s</m:mi>
                                <m:mn>0</m:mn>
                            </m:msub>
                        </m:ci>
                        <m:cn>4000 ft</m:cn>  
                    </m:apply>
                </m:math>.
                
            </para>
            <para xmlns:md="http://cnx.rice.edu/mdml/0.4" xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/" id="bob3">
                For given values of 
                <m:math>
                    <m:ci>v</m:ci>
                </m:math> 
                and 
                <m:math>
                    <m:ci>
                        <m:msub>
                            <m:mi>s</m:mi>
                            <m:mn>0</m:mn>
                        </m:msub>
                    </m:ci>
                </m:math>,
                what value of 
                <m:math>
                    <m:ci>a</m:ci>
                </m:math>
                would cause Vehicle 1 to overtake Vehicle 2 at a given time 
                <m:math>
                    <m:ci>t</m:ci>
                </m:math>?
                Plot your solution for 
                <m:math>
                    <m:ci>a</m:ci>
                </m:math>
                as a function of 
                <m:math>
                    <m:ci>t</m:ci>
                </m:math>
                with 
                <m:math>
                    <m:apply>
                        <m:eq/>
                        <m:ci>v</m:ci>
                        <m:cn>80 ft/s</m:cn>  
                    </m:apply>
                </m:math>
                and
                <m:math>
                    <m:apply>
                        <m:eq/>
                        <m:ci>
                            <m:msub>
                                <m:mi>s</m:mi>
                                <m:mn>0</m:mn>
                            </m:msub>
                        </m:ci>
                        <m:cn>4000 ft</m:cn>  
                    </m:apply>
                </m:math>.
            </para>
        </problem>
    </exercise>
    
</content>  
  
</document>
