Definite Integration and Initial Value Problems












2














This video introduces a way to solve simple ODEs in the form $y' = f(x)$ simultaneously with an initial value problem, using definite integration. My differential equations book presents what appears to be a similar, definite integration in the section on separable differential equations, but in my opinion doesn't explain the step clearly enough to be helpful.



In the simplest terms possible, why is this algorithm equivalent to solving an initial value problem the traditional way, and how, if at all, can it be applied to ODEs that require more than simple integration (and perhaps more than separation of variables) and/or multiple "initial" values (i.e., problems with both a proportionality constant and an integration constant) to solve?










share|cite|improve this question





























    2














    This video introduces a way to solve simple ODEs in the form $y' = f(x)$ simultaneously with an initial value problem, using definite integration. My differential equations book presents what appears to be a similar, definite integration in the section on separable differential equations, but in my opinion doesn't explain the step clearly enough to be helpful.



    In the simplest terms possible, why is this algorithm equivalent to solving an initial value problem the traditional way, and how, if at all, can it be applied to ODEs that require more than simple integration (and perhaps more than separation of variables) and/or multiple "initial" values (i.e., problems with both a proportionality constant and an integration constant) to solve?










    share|cite|improve this question



























      2












      2








      2







      This video introduces a way to solve simple ODEs in the form $y' = f(x)$ simultaneously with an initial value problem, using definite integration. My differential equations book presents what appears to be a similar, definite integration in the section on separable differential equations, but in my opinion doesn't explain the step clearly enough to be helpful.



      In the simplest terms possible, why is this algorithm equivalent to solving an initial value problem the traditional way, and how, if at all, can it be applied to ODEs that require more than simple integration (and perhaps more than separation of variables) and/or multiple "initial" values (i.e., problems with both a proportionality constant and an integration constant) to solve?










      share|cite|improve this question















      This video introduces a way to solve simple ODEs in the form $y' = f(x)$ simultaneously with an initial value problem, using definite integration. My differential equations book presents what appears to be a similar, definite integration in the section on separable differential equations, but in my opinion doesn't explain the step clearly enough to be helpful.



      In the simplest terms possible, why is this algorithm equivalent to solving an initial value problem the traditional way, and how, if at all, can it be applied to ODEs that require more than simple integration (and perhaps more than separation of variables) and/or multiple "initial" values (i.e., problems with both a proportionality constant and an integration constant) to solve?







      integration differential-equations definite-integrals indefinite-integrals initial-value-problems






      share|cite|improve this question















      share|cite|improve this question













      share|cite|improve this question




      share|cite|improve this question








      edited Nov 26 at 23:23

























      asked Nov 25 at 21:07









      user10478

      388111




      388111



























          active

          oldest

          votes











          Your Answer





          StackExchange.ifUsing("editor", function () {
          return StackExchange.using("mathjaxEditing", function () {
          StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix) {
          StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["$", "$"], ["\\(","\\)"]]);
          });
          });
          }, "mathjax-editing");

          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "69"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          autoActivateHeartbeat: false,
          convertImagesToLinks: true,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: 10,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          noCode: true, onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














          draft saved

          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f3013394%2fdefinite-integration-and-initial-value-problems%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown






























          active

          oldest

          votes













          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes
















          draft saved

          draft discarded




















































          Thanks for contributing an answer to Mathematics Stack Exchange!


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          Use MathJax to format equations. MathJax reference.


          To learn more, see our tips on writing great answers.





          Some of your past answers have not been well-received, and you're in danger of being blocked from answering.


          Please pay close attention to the following guidance:


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          To learn more, see our tips on writing great answers.




          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f3013394%2fdefinite-integration-and-initial-value-problems%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          Popular posts from this blog

          How do I know what Microsoft account the skydrive app is syncing to?

          Grease: Live!

          When does type information flow backwards in C++?