```c
x=0.1:0.1:0.9;
y=x.^2+rand(1);
plot(x,y,'ro-')
grid on
h=gca;
NowXticklabel=h.XTickLabel
h.XTickLabel=strcat(NowXticklabel,'^2')
```c
x=0.1:0.1:0.9;
y=x.^2+rand(1);
plot(x,y,'ro-')
grid on
h=gca;
NowXticklabel=h.XTickLabel
h.XTickLabel=strcat(NowXticklabel,'^2')
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