Error using ==> mtimes Inner matrix dimensions must agree 用matlab求解时出现错误

应该这么写 t=0:0.001:0.02; x=sqrt(25.0001-0.1*cos(pi+116801*t)).*cos(66*t-acos((25-0.01*cos(pi+116801*t))./sqrt(25.0001-0.1*cos(pi+116801*t)))); y=sqrt(25.0001-0.1*cos(pi+116801*t)).*sin(66*t-acos((25-0.01*cos(pi+116801*t))./sqrt(25.0001-0.1*cos(pi+116