Matlab中出现了Matrix must be square.>> syms x y z X Yx=-5:0.1:5; y=x;[X,Y]=meshgrid(x,y);x^2.*z^3+9.*y^2.*z^3/80==(x^2+9.*y^2/4+z^2-1)^3;surf(X,Y,z)Error using ==> mpowerMatrix must be square.这个是什么问题?系统把x y z X Y当成了矩
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