Supply and demand analysis

ratprint:false; kill(all);

func: 200000/(1.+exp(-a*x+3));

plot2d([ev(func, a:2.0), ev(func, a:3.0)], [x,0, 7]);

func2: 200000/(1.+exp(-2*x+b));

plot2d([ev(func2, b:3.0), ev(func2, b:4.0)], [x,0, 7]);

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Contact address: Prof. Yukari Shirota, Faculty of Economics, Gakushuin University, 1-5-1 Mejiro,
Toshima-ku, Tokyo, 171-8588 JAPAN,  yukari.shirota@ipsj.or.jp