Error in the determinant line

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Philosophaie
Philosophaie 2017-9-21
编辑： Walter Roberson 2017-9-21
Error in detA line:
syms Ex Ey Ez c Bx By Bz
A=sym(zeros(4,4));
A=[0 -Ex/c -Ey/c -Ez/c; Ex/c 0 -Bz By; Ey/c Bz 0 -Bx; Ez/c -By Bx 0 ];
detA=det(A);
  2 个评论
James Tursa
James Tursa 2017-9-21
编辑：Walter Roberson 2017-9-21
Works for me:
>> detA=det(A)
detA =
(Bx^2*Ex^2)/c^2 + (By^2*Ey^2)/c^2 + (Bz^2*Ez^2)/c^2 + (2*Bx*By*Ex*Ey)/c^2 + (2*Bx*Bz*Ex*Ez)/c^2 + (2*By*Bz*Ey*Ez)/c^2
John D'Errico
John D'Errico 2017-9-21
编辑：Walter Roberson 2017-9-21
I wonder if you defined a variable named det?

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