/* -*-ePiX-*- */
#include "epix.h"
#include "cme_style.h"
using namespace ePiX;

double dx(0.125);

double f(double x)
{
  return x*(1-x);
}

int main()
{
  picture(P(0,0), P(1,0.333), "2.4 x 0.8in");

  begin();
  cme_bold();

  plot(f, -0.1, 1.1, 40);
  for (int i=1; i<=7; ++i)
    line(P(dx*i,0), P(dx*i, f(dx*i)));

  label(P(1,0), P(0,4), "$N$", tr);
  label(P(0.5,f(0.5)), P(0,4), "$M$", t);

  brace(P(0,0), P(1,0), "$1$", P(0,-4));
  font_size("footnotesize");
  smallbrace(P(0.5,0), P(0.5, f(0.5)), "$1/4$", P(4,0));
  font_size();

  axis_labels("$O$", "", "$Y$");
  line(P(-0.2,0), P(1.2,0));
  V_axis();
  caption("Fig.~60.", P(0,-12));
  tikz_format();
  end();
}