%exm07252_1.m
clf;shg
dx=0.1;
x=0:dx:4;
y=x.*sin(x);
s=cumtrapz(y)*dx;
plotyy(x,y,x,s),
text(0.5,0,'\fontsize{14}\ity=xsinx')
sint='{\fontsize{16}\int_{\fontsize{8}0}^{  x}}';
text(2.5,3.5,['\fontsize{14}\its=',sint,'\fontsize{14}\itxsinxdx'])