The integration of Legendre functions












0












$begingroup$


We know the integration of Legendre wavelet function is $int_{0}^{T}Psi(s)ds=P.Psi(t)$. We can find the matrix $P$ as follows.



enter image description here



enter image description here



enter image description here



My question: I want to learn how to find Matrix $P$. I can' t understand how to derive the matrix by hand.



So, I tried to check the matrix $P$ by the help of Maple. (Package program)



My try: Firstly, I calculated $int_{0}^{T}Psi(s)ds$ and then I found the value of the integration for some collocation points $t$.
And then, I calculated $ Psi(t)$ for the above collocation points $t$.
Now, we can find simply the matrix $P$ by Linear Algebra.
Yes, I found, too. But, the problem is that the matrix $P$ is different from the matrix $P$ given in the picture.



Best regards.










share|cite|improve this question









$endgroup$

















    0












    $begingroup$


    We know the integration of Legendre wavelet function is $int_{0}^{T}Psi(s)ds=P.Psi(t)$. We can find the matrix $P$ as follows.



    enter image description here



    enter image description here



    enter image description here



    My question: I want to learn how to find Matrix $P$. I can' t understand how to derive the matrix by hand.



    So, I tried to check the matrix $P$ by the help of Maple. (Package program)



    My try: Firstly, I calculated $int_{0}^{T}Psi(s)ds$ and then I found the value of the integration for some collocation points $t$.
    And then, I calculated $ Psi(t)$ for the above collocation points $t$.
    Now, we can find simply the matrix $P$ by Linear Algebra.
    Yes, I found, too. But, the problem is that the matrix $P$ is different from the matrix $P$ given in the picture.



    Best regards.










    share|cite|improve this question









    $endgroup$















      0












      0








      0





      $begingroup$


      We know the integration of Legendre wavelet function is $int_{0}^{T}Psi(s)ds=P.Psi(t)$. We can find the matrix $P$ as follows.



      enter image description here



      enter image description here



      enter image description here



      My question: I want to learn how to find Matrix $P$. I can' t understand how to derive the matrix by hand.



      So, I tried to check the matrix $P$ by the help of Maple. (Package program)



      My try: Firstly, I calculated $int_{0}^{T}Psi(s)ds$ and then I found the value of the integration for some collocation points $t$.
      And then, I calculated $ Psi(t)$ for the above collocation points $t$.
      Now, we can find simply the matrix $P$ by Linear Algebra.
      Yes, I found, too. But, the problem is that the matrix $P$ is different from the matrix $P$ given in the picture.



      Best regards.










      share|cite|improve this question









      $endgroup$




      We know the integration of Legendre wavelet function is $int_{0}^{T}Psi(s)ds=P.Psi(t)$. We can find the matrix $P$ as follows.



      enter image description here



      enter image description here



      enter image description here



      My question: I want to learn how to find Matrix $P$. I can' t understand how to derive the matrix by hand.



      So, I tried to check the matrix $P$ by the help of Maple. (Package program)



      My try: Firstly, I calculated $int_{0}^{T}Psi(s)ds$ and then I found the value of the integration for some collocation points $t$.
      And then, I calculated $ Psi(t)$ for the above collocation points $t$.
      Now, we can find simply the matrix $P$ by Linear Algebra.
      Yes, I found, too. But, the problem is that the matrix $P$ is different from the matrix $P$ given in the picture.



      Best regards.







      numerical-methods numerical-linear-algebra legendre-polynomials wavelets legendre-functions






      share|cite|improve this question













      share|cite|improve this question











      share|cite|improve this question




      share|cite|improve this question










      asked Dec 19 '18 at 18:17









      HD239HD239

      441314




      441314






















          0






          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%2f3046699%2fthe-integration-of-legendre-functions%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown

























          0






          active

          oldest

          votes








          0






          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.




          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f3046699%2fthe-integration-of-legendre-functions%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

          Quarter-circle Tiles

          build a pushdown automaton that recognizes the reverse language of a given pushdown automaton?

          Mont Emei