The integration of Legendre functions












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$begingroup$


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.










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    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






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      share|cite|improve this question











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      asked Dec 19 '18 at 18:17









      HD239HD239

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