Separate multiplication of element-wise exponential

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If I have an equation of the form



$A*(B*x).^4$



where $A$ and $B$ are rectangular matrices of size $ntimes n$ and $x$ is a vector size $ntimes 1$.



I would like to get $B$ out of the brackets, but because the power is element-wise the solution is not that obvious.



Is there anyway to do this?




linear-algebra exponentiation numerical-linear-algebra




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    up vote
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    down vote

    favorite












    If I have an equation of the form



    $A*(B*x).^4$



    where $A$ and $B$ are rectangular matrices of size $ntimes n$ and $x$ is a vector size $ntimes 1$.



    I would like to get $B$ out of the brackets, but because the power is element-wise the solution is not that obvious.



    Is there anyway to do this?




    linear-algebra exponentiation numerical-linear-algebra




    share|cite|improve this question























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      If I have an equation of the form



      $A*(B*x).^4$



      where $A$ and $B$ are rectangular matrices of size $ntimes n$ and $x$ is a vector size $ntimes 1$.



      I would like to get $B$ out of the brackets, but because the power is element-wise the solution is not that obvious.



      Is there anyway to do this?




      linear-algebra exponentiation numerical-linear-algebra




      share|cite|improve this question













      If I have an equation of the form



      $A*(B*x).^4$



      where $A$ and $B$ are rectangular matrices of size $ntimes n$ and $x$ is a vector size $ntimes 1$.



      I would like to get $B$ out of the brackets, but because the power is element-wise the solution is not that obvious.



      Is there anyway to do this?





      linear-algebra exponentiation numerical-linear-algebra





      share|cite|improve this question












      share|cite|improve this question




      share|cite|improve this question








      edited Jul 30 at 13:38









      zzuussee

      1,241419




      1,241419









      asked Jul 30 at 8:48









      DGerritzen

      11




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