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pt'><span
lang=3DEN-US>y0</span><span style=3D'font-family:SimSun;mso-ascii-font-fami=
ly:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>&#21021;&#22987;&#26465;&#20214;&#=
12290;</span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left;text-indent:21.0=
pt'><span
style=3D'font-family:SimSun;mso-ascii-font-family:"Times New Roman";mso-han=
si-font-family:
"Times New Roman"'>&#20363;</span><span lang=3DEN-US>5</span><span
style=3D'font-family:SimSun;mso-ascii-font-family:"Times New Roman";mso-han=
si-font-family:
"Times New Roman"'>&#65306;&#27714;&#35299;&#24494;&#20998;&#26041;&#31243;=
</span><span
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amily:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>&#30340;</span><=
span
lang=3DEN-US>MATLAB</span><span style=3D'font-family:SimSun;mso-ascii-font-=
family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>&#31243;&#24207;=
&#22914;&#19979;&#65306;</span><span
lang=3DEN-US>fun=3Dinline('-2*y+2*x*x+2*x')</span><span style=3D'font-famil=
y:SimSun;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Ro=
man"'>&#65307;</span><span
lang=3DEN-US>[<span class=3DSpellE><span class=3DGramE>x,</span>y</span>]=
=3D<span
class=3DGramE>ode23(</span>fun,[0,0.5],1)</span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span style=3D'=
font-family:
SimSun;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times=
 New Roman"'>&#32467;&#26524;&#20026;&#65306;</span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span lang=3DEN=
-US>x =3D
0,0.0400,0.0900,0.1400,0.1900,0.2400,0.2900,0.3400,0.3900,0.4400,0.4900,0.5=
000</span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span lang=3DEN=
-US>y =3D
1.0000,0.9247,0.8434,0.7754,0.7199,0.6764,0.6440,0.6222,0.6105,0.6084,0.615=
4,0.6179</span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left;text-indent:21.0=
pt'><span
style=3D'font-family:SimSun;mso-ascii-font-family:"Times New Roman";mso-han=
si-font-family:
"Times New Roman"'>&#20363;</span><span lang=3DEN-US>6</span><span
style=3D'font-family:SimSun;mso-ascii-font-family:"Times New Roman";mso-han=
si-font-family:
"Times New Roman"'>&#65306;&#27714;&#35299;&#24494;&#20998;&#26041;&#31243;=
</span><span
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amily:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>&#30340;&#35299;=
&#65292;&#24182;&#30011;&#20986;&#35299;&#30340;&#22270;&#24418;&#12290;</s=
pan></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left;text-indent:21.0=
pt'><span
style=3D'font-family:SimSun;mso-ascii-font-family:"Times New Roman";mso-han=
si-font-family:
"Times New Roman"'>&#20998;&#26512;&#65306;&#36825;&#26159;&#19968;&#20010;=
&#20108;&#38454;&#38750;&#32447;&#24615;&#26041;&#31243;&#65292;&#29992;&#2=
9616;&#25104;&#30340;&#26041;&#27861;&#22343;&#19981;&#33021;&#27714;&#3529=
9;&#65292;&#20294;&#25105;&#20204;&#21487;&#20197;&#36890;&#36807;&#19979;&=
#38754;&#30340;&#21464;&#25442;&#65292;&#23558;&#20108;&#38454;&#26041;&#31=
243;&#21270;&#20026;&#19968;&#38454;&#26041;&#31243;&#32452;&#65292;&#21363=
;&#21487;&#27714;&#35299;&#12290;</span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left;text-indent:21.0=
pt'><span
style=3D'font-family:SimSun;mso-ascii-font-family:"Times New Roman";mso-han=
si-font-family:
"Times New Roman"'>&#20196;&#65306;</span><span lang=3DEN-US><sub><!--[if g=
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amily:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>&#65292;&#21017;=
&#24471;&#21040;&#65306;</span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left;text-indent:21.0=
pt'><span
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src=3D"sy15.files/image040.jpg" align=3Dleft hspace=3D12 v:shapes=3D"_x0000=
_s1026"><![endif]><span
style=3D'font-family:SimSun;mso-ascii-font-family:"Times New Roman";mso-han=
si-font-family:
"Times New Roman"'>&#25509;&#30528;&#65292;&#32534;&#20889;</span><span
class=3DSpellE><span lang=3DEN-US>vdp.m</span></span><span style=3D'font-fa=
mily:SimSun;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Ro=
man"'>&#22914;&#19979;&#65306;</span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span class=3DG=
ramE><span
lang=3DEN-US>function</span></span><span lang=3DEN-US> <span class=3DSpellE=
>fy</span>=3D<span
class=3DSpellE>vdp</span>(<span class=3DSpellE>t,x</span>)</span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span class=3DS=
pellE><span
class=3DGramE><span lang=3DEN-US>fy</span></span></span><span lang=3DEN-US>=
=3D[x(2);7*(1-x(1)^2)*x(2)-x(1)];</span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span style=3D'=
font-family:
SimSun;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times=
 New Roman"'>&#20877;&#32534;&#20889;</span><span
lang=3DEN-US>m</span><span style=3D'font-family:SimSun;mso-ascii-font-famil=
y:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>&#25991;&#20214;</span><span
lang=3DEN-US>sy7_6.m</span><span style=3D'font-family:SimSun;mso-ascii-font=
-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>&#22914;&#19979;=
&#65306;</span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span lang=3DEN=
-US>y0<span
class=3DGramE>=3D[</span>1;0]</span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span lang=3DEN=
-US>[<span
class=3DSpellE><span class=3DGramE>t,</span>x</span>]=3D<span class=3DGramE=
>ode45(</span>@<span
class=3DSpellE>vdp</span>,[0,40],y0);</span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span lang=3DES
style=3D'mso-ansi-language:ES'>y=3Dx(:,1);dy=3Dx(:,2);<o:p></o:p></span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span lang=3DES
style=3D'mso-ansi-language:ES'>plot(t,y,t,dy)<o:p></o:p></span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span lang=3DES
style=3D'mso-ansi-language:ES'><o:p>&nbsp;</o:p></span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span lang=3DES
style=3D'mso-ansi-language:ES'><o:p>&nbsp;</o:p></span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><b style=3D'mso=
-bidi-font-weight:
normal'><span lang=3DES style=3D'mso-ansi-language:ES'><o:p>&nbsp;</o:p></s=
pan></b></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><b style=3D'mso=
-bidi-font-weight:
normal'><span style=3D'font-family:SimSun;mso-ascii-font-family:"Times New =
Roman";
mso-hansi-font-family:"Times New Roman"'>&#19977;&#12289;&#23454;&#39564;&#=
20869;&#23481;</span><span
lang=3DEN-US><o:p></o:p></span></b></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span lang=3DEN=
-US>1</span><span
style=3D'font-family:SimSun;mso-ascii-font-family:"Times New Roman";mso-han=
si-font-family:
"Times New Roman"'>&#65294;&#21033;&#29992;</span><span lang=3DEN-US>MATLAB=
</span><span
style=3D'font-family:SimSun;mso-ascii-font-family:"Times New Roman";mso-han=
si-font-family:
"Times New Roman"'>&#27714;&#24120;&#24494;&#20998;&#26041;&#31243;&#30340;=
&#21021;&#20540;&#38382;&#39064;</span><span
lang=3DEN-US><sub><!--[if gte vml 1]><v:shape id=3D"_x0000_i1046" type=3D"#=
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