\documentclass{article} \usepackage[inline]{asymptote} \usepackage{lmodern} \begin{document} \begin{asy} size(300,200,IgnoreAspect); import graph; real F(real t){return 4/sqrt(1+t^4);} real f(real x){return simpson(F,x,2x);} pen axPen=darkblue; pen fPen=red+1bp; draw(graph(f,-7,7,n=200),fPen); string noZero(real x) {return (x==0)?"":string(x);} defaultpen(fontsize(10pt)); xaxis(axPen,LeftTicks(noZero,Step=2)); yaxis(axPen,RightTicks(noZero,Step=0.5)); label("$f:x\mapsto \displaystyle\int_x^{2x}" +"\frac{4}{\sqrt{1+t^4}}\, \textrm{d}t$" ,(1.7,f(1.7)),NE); \end{asy} \end{document}
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