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📁 分形理论及算法
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    <TD><A=20
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href=3D"http://www.phil.pku.edu.cn/personal/huajie/fractalart/html/801.ht=
m">8.1</A></TD>
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href=3D"http://www.phil.pku.edu.cn/personal/huajie/fractalart/html/802.ht=
m">8.2</A></TD>
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href=3D"http://www.phil.pku.edu.cn/personal/huajie/fractalart/html/803.ht=
m">8.3</A></TD>
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href=3D"http://www.phil.pku.edu.cn/personal/huajie/fractalart/html/804.ht=
m">8.4</A></TD>
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href=3D"http://www.phil.pku.edu.cn/personal/huajie/fractalart/html/805.ht=
m">8.5</A></TD>
    <TD><A=20
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href=3D"http://www.phil.pku.edu.cn/personal/huajie/fractalart/html/806.ht=
m">8.6</A></TD>
    <TD><A=20
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href=3D"http://www.phil.pku.edu.cn/personal/huajie/fractalart/html/807.ht=
m">8.7</A></TD></TR></TBODY></TABLE></FONT></CENTER>
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<H2>8.6 =B9=FA=CD=F5=D3=B3=C9=E4</H2>
<P>1994=C4=EA=A1=B0=BF=C6=D1=A7=D3=EB=D2=D5=CA=F5=C6=E6=B2=C5=A1=B1=C6=A4=
=BF=CB=C5=B7=CE=D6(C.A.Pickover,1957- , <A=20
href=3D"http://sprott.physics.wisc.edu/pickover/home.htm">http://sprott.p=
hysics.wisc.edu/pickover/home.htm</A>=20
=B3=F6=B0=E6=C1=CB=D2=BB=B1=BE=D3=D0=C8=A4=B5=C4=D0=A1=CA=E9=A1=B6=BB=EC=E3=
=E7=C6=E6=BE=B3=A3=BA=B7=D6=D0=CE=CA=C0=BD=E7=D0=E9=C4=E2=C0=FA=CF=D5=BC=C7=
=A1=B7(<I>Chaos in Wonderland,Visu al Adventures in a=20
Fractal =
World</I>)=A1=A3=CA=E9=D6=D0=B9=E1=B3=B9=CA=BC=D6=D5=CA=B9=D3=C3=C1=CB=D2=
=BB=B8=F6=BC=F2=B5=A5=B5=C4=B6=FE=CE=AC=D3=B3=C9=E4=A3=AC=CB=FB =
=B3=C6=D6=AE=CE=AA=B9=FA=CD=F5=D3=B3=C9=E4(King=20
map)=A3=AC=D4=DA=C3=BF=D2=BB=D5=C2=BF=AA=CD=B7=A3=AC=D7=F7=D5=DF=B6=BC=B8=
=F8=B3=F6=D2=BB=D5=C5=B2=BB=CD=AC=C3=E6=C3=B2=B5=C4=D3=B3=C9=E4=CD=BC=A1=A3=
 </P>
<P>
<CENTER><IMG=20
src=3D"http://www.phil.pku.edu.cn/personal/huajie/fractalart/html/pickove=
r.gif">
<P></P><FONT =
color=3D#ff0000>=BF=C6=D1=A7=D3=EB=D2=D5=CA=F5=C6=E6=B2=C5=A1=AA=A1=AA=C6=
=A4=BF=CB=C5=B7=CE=D6(1957-)</FONT>=20
<P></CENTER></P>
<P>=D3=C3=B6=FE=CE=AC=B5=C4=B9=FA=CD=F5=D3=B3=C9=E4=BF=C9=D2=D4=C9=FA=B3=C9=
=D0=ED=B6=E0=C0=E0=CB=C6=C8=FD=CE=AC=B5=C4=B8=B4=D4=D3=C7=FA=C3=E6=A3=AC=B5=
=F7=D5=FB=B2=CE=CA=FD=A3=AC=BB=F2=D5=DF=BC=D3=C9=CF=B8=DF=BD=D7=C9=E3=B6=AF=
=CF=EE=A3=AC=BB=E1 =
=B5=C3=B5=BD=B8=FC=B6=E0=B5=C4=BB=A8=D1=F9=A1=A3=B9=FA=CD=F5=D3=B3=C9=E4=B5=
=C4=D7=EE=B3=F5=D0=CE=CA=BD=CA=C7</P>
<UL><I>x</I>_(n+1)=3Dsin(<I>by</I>_n)+<I>c</I>sin(<I>bx</I>_n),<BR><I>y</=
I>_(n+1)=3Dsin(<I>ax</I>_n)+<I>d</I>sin(<I>ay</I>_n),</UL>
<P>=C6=E4=D6=D0<I>a,b,c,d</I>=CA=C7=BF=C9=B5=F7=B2=CE=CA=FD=A1=A3=B3=F5=CA=
=BC=D6=B5<I>x</I>_0=3D<I>y</I>_0=3D0.1=A1=A3 =
=B1=C8=C8=E7=B2=CE=CA=FD=BF=C9=D2=D4=C8=A1=D5=E2=20
=D1=F9=D2=BB=D7=E9=D6=B5=A3=BA<I>a</I>=3D-1.56918, <I>b</I>=3D2.679879, =
<I>c</I>=3D0.865145, <I>d</I>=3D=20
0.744728=A1=A3=B9=FA=CD=F5=D3=B3=C9=E4=BC=C6=CB=E3=B3=CC=D0=F2=C8=E7=CF=C2=
=A3=BA</P>
<P>
<UL><PRE>{wond.pas,1994}
uses Graph,Dos,Crt;
var
    x,y,a,b,c,d=A3=ACxnew,ynew:real;
    Gd,Gm:integer;
begin
Gd:=3DDetect; InitGraph(Gd,Gm,'D:\PASCAL');
x:=3D0.1;y:=3D0.1;
a:=3D-0.9666918; {-0.97}
b:=3D2.679879; {2.8}
c:=3D0.565145; {0.45,0.76}
d:=3D0.744728; {0.71}
{-1.86=A3=BCx=A3=BC1.86}; {-1.51=A3=BCy=A3=BC1.51};
repeat
     xnew:=3Dsin(y*b)+c*sin(x*b);{-e*sin(x*(1-x)}
     ynew:=3Dsin(x*a)+d*sin(y*a);
     x:=3Dxnew; y:=3Dynew;
     PutPixel(round(x*130)+300,225-round(y*160),15);
until KeyPressed;
CloseGraph;
end.</PRE></UL><PRE></PRE>
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<P>=CD=BC8.12(a)=B9=FA=CD=F5=D3=B3=C9=E4=CD=BC=C6=D7</P>
<P><IMG=20
src=3D"http://www.phil.pku.edu.cn/personal/huajie/fractalart/html/p812c.j=
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