Solution to set of cubic equations












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$begingroup$


Let us consider the following set of equations:



$$a|x_i|^6 + b|x_i|^4 + c|x_i|^2 + d = 0,$$



where $i=1,2,3$ and $a,b,c,d$ are real, non-zero numbers. We can easily obtain three different solutions for the complex $x_i$, i.e., $x_1neq x_2neq x_3$.



Let us now add another term to the above equations, which depends non-trivially on $x_j$ and $x_k$:



$$a|x_i|^6 + b|x_i|^4 + c|x_i|^2 + d + ex_jx_k = 0,$$



where $i,j,k=1,2,3$ and $ineq jneq k$ and $e$ is a real, non-zero number.
Are there still three different solutions obtainable, i.e., $x_1neq x_2neq x_3$? If so, how do we obtain these solutions?










share|cite|improve this question









$endgroup$

















    0












    $begingroup$


    Let us consider the following set of equations:



    $$a|x_i|^6 + b|x_i|^4 + c|x_i|^2 + d = 0,$$



    where $i=1,2,3$ and $a,b,c,d$ are real, non-zero numbers. We can easily obtain three different solutions for the complex $x_i$, i.e., $x_1neq x_2neq x_3$.



    Let us now add another term to the above equations, which depends non-trivially on $x_j$ and $x_k$:



    $$a|x_i|^6 + b|x_i|^4 + c|x_i|^2 + d + ex_jx_k = 0,$$



    where $i,j,k=1,2,3$ and $ineq jneq k$ and $e$ is a real, non-zero number.
    Are there still three different solutions obtainable, i.e., $x_1neq x_2neq x_3$? If so, how do we obtain these solutions?










    share|cite|improve this question









    $endgroup$















      0












      0








      0





      $begingroup$


      Let us consider the following set of equations:



      $$a|x_i|^6 + b|x_i|^4 + c|x_i|^2 + d = 0,$$



      where $i=1,2,3$ and $a,b,c,d$ are real, non-zero numbers. We can easily obtain three different solutions for the complex $x_i$, i.e., $x_1neq x_2neq x_3$.



      Let us now add another term to the above equations, which depends non-trivially on $x_j$ and $x_k$:



      $$a|x_i|^6 + b|x_i|^4 + c|x_i|^2 + d + ex_jx_k = 0,$$



      where $i,j,k=1,2,3$ and $ineq jneq k$ and $e$ is a real, non-zero number.
      Are there still three different solutions obtainable, i.e., $x_1neq x_2neq x_3$? If so, how do we obtain these solutions?










      share|cite|improve this question









      $endgroup$




      Let us consider the following set of equations:



      $$a|x_i|^6 + b|x_i|^4 + c|x_i|^2 + d = 0,$$



      where $i=1,2,3$ and $a,b,c,d$ are real, non-zero numbers. We can easily obtain three different solutions for the complex $x_i$, i.e., $x_1neq x_2neq x_3$.



      Let us now add another term to the above equations, which depends non-trivially on $x_j$ and $x_k$:



      $$a|x_i|^6 + b|x_i|^4 + c|x_i|^2 + d + ex_jx_k = 0,$$



      where $i,j,k=1,2,3$ and $ineq jneq k$ and $e$ is a real, non-zero number.
      Are there still three different solutions obtainable, i.e., $x_1neq x_2neq x_3$? If so, how do we obtain these solutions?







      polynomials cubic-equations






      share|cite|improve this question













      share|cite|improve this question











      share|cite|improve this question




      share|cite|improve this question










      asked Dec 7 '18 at 22:51









      LCFLCF

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