prologues:=2; 
beginfig(1);
u:=0.025cm;
pickup pencircle scaled 1;
draw (320.0u,1060.0u)--(320.0u,860.0u);
label.lft(btex $y$ etex,(320u,1060u));
label.bot(btex $x$ etex,(580u,860u));
draw (320.0u,956.0u)--(460.0u,860.0u);
label.lft(btex $b\omega_1$ etex,(320u,956u));
label.bot(btex$\omega_1=\omega_2$ etex,(460u,860u));
draw (320.0u,1060.0u)--(580.0u,860.0u);
draw (320.0u,860.0u)--(580.0u,860.0u);
draw (340u,960u)..(400.0u,900.0u){dir -34}..(460u,880u);
draw (400u,960u)..(460.0u,900.0u){dir -34}..(520u,880u);
pickup pencircle scaled 4;
draw (400u,900u);
dotlabel.bot(btex $x^*$ etex,(400u,860u));
dotlabel.lft(btex $y^*$ etex,(320u,900u));
draw (460u,900u);
draw(528.0u,900.0u);
draw (360u,956u) withcolor green;
label.urt(btex $(x^\prime,y^\prime)$ etex,(360u,956u));
pickup pencircle scaled 1;
draw (400u,900u)--(320u,1012u) dashed evenly scaled 1;
label.lft(btex $bx^*+2b(\omega-x^*)$ etex,(320u,1012u));
draw (460u,900u)--(380u,1012u) dashed evenly scaled 1;
draw (345u,1000u)..(360u,956u){dir -55}..(400u,920u);
endfig;
end