[4*w^2 - 3*w*x - w*y + 6*w*z + 4*x^2 + x*y - 2*x*z + 2*y^2 + 4*y*z + z^2] A= [ 4 1/2 -1 -3/2] [ 1/2 2 2 -1/2] [ -1 2 1 3] [-3/2 -1/2 3 4] [4*w^2 - 3*w*x - w*y + 6*w*z + 4*x^2 + x*y - 2*x*z + 2*y^2 + 4*y*z + z^2] A= [ 4 1/2 -1 -3/2] [ 1/2 2 2 -1/2] [ -1 2 1 3] [-3/2 -1/2 3 4] |
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