', 24,'Color','r');%正确上划线
text(5,0.8,'$\bar{0.5}$','interpreter','latex','FontSize', 24,'Color','r');...','latex','FontSize', 24,'Color','r'); %正确一阶导数
text(5,0,'\.{0.5}','interpreter','latex','FontSize',...24,'Color','g'); %错误一阶导数
text(3,0,'$\ddot{0.5}$','interpreter','latex','FontSize', 24,'...,'$\widehat{0.5}$','interpreter','latex','FontSize', 24,'Color','r'); %正确宽^上标
text(5,0.2,'\t{0.5}','...^b$','interpreter','latex','FontSize', 24,'Color','r'); %求和
text(3,0.4,'$\vec{0.5}$','interpreter',