Calculate the sum of the elements of an elementwise product of two matrices in Maxima











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What's in the title and I've tried thus far:



sum(lambda([i,j], M[i,j] * Ma[i,j]))


This expression gives me the Wrong number of arguments error. Doesn't sum() operate on lists, or am I missing something like an expression in the sum function call?










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    up vote
    1
    down vote

    favorite












    What's in the title and I've tried thus far:



    sum(lambda([i,j], M[i,j] * Ma[i,j]))


    This expression gives me the Wrong number of arguments error. Doesn't sum() operate on lists, or am I missing something like an expression in the sum function call?










    share|improve this question
























      up vote
      1
      down vote

      favorite









      up vote
      1
      down vote

      favorite











      What's in the title and I've tried thus far:



      sum(lambda([i,j], M[i,j] * Ma[i,j]))


      This expression gives me the Wrong number of arguments error. Doesn't sum() operate on lists, or am I missing something like an expression in the sum function call?










      share|improve this question













      What's in the title and I've tried thus far:



      sum(lambda([i,j], M[i,j] * Ma[i,j]))


      This expression gives me the Wrong number of arguments error. Doesn't sum() operate on lists, or am I missing something like an expression in the sum function call?







      matrix sum product maxima






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      asked Nov 19 at 15:04









      TheSodesa

      16210




      16210
























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          Turns out the answer was rather simple:



          lsum(i,i, list_matrix_entries(M3 * Ma))


          This essentially translates to (sum_{iin{set of the elements of M*Ma}} i) in LaTeX.






          share|improve this answer





















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            1 Answer
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            active

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            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes








            up vote
            1
            down vote













            Turns out the answer was rather simple:



            lsum(i,i, list_matrix_entries(M3 * Ma))


            This essentially translates to (sum_{iin{set of the elements of M*Ma}} i) in LaTeX.






            share|improve this answer

























              up vote
              1
              down vote













              Turns out the answer was rather simple:



              lsum(i,i, list_matrix_entries(M3 * Ma))


              This essentially translates to (sum_{iin{set of the elements of M*Ma}} i) in LaTeX.






              share|improve this answer























                up vote
                1
                down vote










                up vote
                1
                down vote









                Turns out the answer was rather simple:



                lsum(i,i, list_matrix_entries(M3 * Ma))


                This essentially translates to (sum_{iin{set of the elements of M*Ma}} i) in LaTeX.






                share|improve this answer












                Turns out the answer was rather simple:



                lsum(i,i, list_matrix_entries(M3 * Ma))


                This essentially translates to (sum_{iin{set of the elements of M*Ma}} i) in LaTeX.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 19 at 15:39









                TheSodesa

                16210




                16210






























                     

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