linear algebra - Solve multivariate symbolic equation (equation for hyperplane) in MATLAB and then sym2poly? -


So I'm working on a 5-D problem, from which I try to solve this on a hyperplane equation I am in Space I have tried to do this by: 

  sys g g1 g2 x1 x2 x3 x4 x5 g_1 = -log (det (sig1_new) ^ (1/2)) - (1 / 2) * ([x1; x2; x3; x4; x5] -u1 ')' * inv (sig1_new) * ([x1; x2; x3; x4; x5] -u1 ') + log (p1); G_2 = -log (det (sig2_new) ^ (1/2) - (1/2) * ([x1; x2; x3; x4; x5] -u2 ')' * inv (sig2_new) * ([x1; X2, x3, x4, x5] -u2 ') + log (p2); G = g_1-g_2 plane = solution (g_1-g_2, x5)   
 This fixes the system, but I'm not sure how to do anything relevant with the result because I changed Can not do back in a polynomial, because there is more than one symbolic variable I'm not sure, maybe I am doing my problem wrong?   
 
 
 This is not what you want, but you can change the  matlabFunction  Can use 4 input,  x1 ,  x2 ,  x3 ,  x4  with an anonymous function  :  
  planeFunc = matlabFunction (plane)

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