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lang=3DES style=3D'mso-ansi-language:ES'><span
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp; </span></span><span
lang=3DEN-US>X=3Dfsolve(fun,x0,options)</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"'>&#20989;&#25968;</span><span lang=3DEN-US>solve</span><s=
pan
style=3D'font-family:SimSun;mso-ascii-font-family:"Times New Roman";mso-han=
si-font-family:
"Times New Roman"'>&#29992;&#26469;&#35299;&#31526;&#21495;&#26041;&#31243;=
&#12289;&#26041;&#31243;&#32452;&#65292;&#20197;&#21450;&#36229;&#36234;&#2=
6041;&#31243;&#65292;&#22914;&#19977;&#35282;&#20989;&#25968;&#26041;&#3124=
3;&#31561;&#38750;&#32447;&#24615;&#26041;&#31243;&#12290;&#21442;&#25968;<=
/span><span
lang=3DEN-US>&#8217;eqnN&#8217;</span><span style=3D'font-family:SimSun;mso=
-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>&#20026;&#26041;=
&#31243;&#32452;&#20013;&#30340;&#31532;</span><span
lang=3DEN-US>N</span><span style=3D'font-family:SimSun;mso-ascii-font-famil=
y:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>&#20010;&#26041;&#31243;&#65292;</=
span><span
lang=3DEN-US>&#8217;varN&#8217;</span><span style=3D'font-family:SimSun;mso=
-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>&#21017;&#26159;=
&#31532;</span><span
lang=3DEN-US>N</span><span style=3D'font-family:SimSun;mso-ascii-font-famil=
y:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>&#20010;&#21464;&#37327;&#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"'>&#20989;&#25968;</span><span lang=3DEN-US>null(A)</span>=
<span
style=3D'font-family:SimSun;mso-ascii-font-family:"Times New Roman";mso-han=
si-font-family:
"Times New Roman"'>&#21017;&#29992;&#26469;&#35299;&#32447;&#24615;&#26041;=
&#31243;&#32452;</span><span
lang=3DEN-US>AX=3DO</span><span style=3D'font-family:SimSun;mso-ascii-font-=
family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>&#30340;&#22522;=
&#30784;&#35299;&#31995;&#65292;&#23454;&#38469;&#26159;&#27714;&#31995;&#2=
5968;&#30697;&#38453;</span><span
lang=3DEN-US>A</span><span style=3D'font-family:SimSun;mso-ascii-font-famil=
y:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>&#30340;&#38646;&#31354;&#38388;&#=
65292;&#22312;</span><span
lang=3DEN-US>null</span><span style=3D'font-family:SimSun;mso-ascii-font-fa=
mily:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>&#20989;&#25968;=
&#20013;&#21487;&#21152;&#20837;&#21442;&#25968;</span><span
lang=3DEN-US>&#8217;r&#8217;</span><span style=3D'font-family:SimSun;mso-as=
cii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>&#65292;&#34920;=
&#31034;&#26377;&#29702;&#22522;&#12290;&#36890;&#36807;&#27714;&#31995;&#2=
5968;&#30697;&#38453;&#30340;&#31209;&#21644;&#22686;&#24191;&#30697;&#3845=
3;&#30340;&#31209;&#65292;&#21487;&#20197;&#21028;&#23450;&#26041;&#31243;&=
#32452;&#26159;&#21542;&#26377;&#35299;&#65292;&#20197;&#21450;&#26159;&#21=
542;&#38656;&#35201;&#27714;&#22522;&#30784;&#35299;&#31995;&#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"'>&#21478;&#22806;&#65292;&#36824;&#21487;&#20197;&#29992;=
&#20989;&#25968;</span><span
lang=3DEN-US>fzero</span><span style=3D'font-family:SimSun;mso-ascii-font-f=
amily:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>&#26469;&#27714;=
&#35299;&#38750;&#32447;&#24615;&#26041;&#31243;&#12290;&#29992;&#27861;&#1=
9982;</span><span
lang=3DEN-US>fsolve</span><span style=3D'font-family:SimSun;mso-ascii-font-=
family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>&#31867;&#20284;=
&#65292;&#35831;&#22823;&#23478;&#33258;&#24049;&#26597;&#30475;&#24110;&#3=
2452;&#31995;&#32479;&#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>1</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;&#26041;&#31243;</span><span
lang=3DEN-US><sub><!--[if gte vml 1]><v:shapetype id=3D"_x0000_t75" coordsi=
ze=3D"21600,21600"
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  <v:f eqn=3D"if lineDrawn pixelLineWidth 0"/>
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</v:shape><![endif]--><![if !vml]><img width=3D88 height=3D21
src=3D"sy14.files/image002.gif" v:shapes=3D"_x0000_i1025"><![endif]></sub><=
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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;=
&#20026;&#65306;</span><span
lang=3DEN-US>X=3Dsolve(&#8216;x^2-x-6=3D<st1:chmetcnv UnitName=3D"&#8217;"
SourceValue=3D"0" HasSpace=3D"False" Negative=3D"False" NumberType=3D"1" TC=
SC=3D"0"
w:st=3D"on">0&#8217;</st1:chmetcnv>,&#8217;x&#8217;)</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><span
lang=3DEN-US>X=3D3, -2</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>2</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;&#26041;&#31243;&#32452;</span><=
span
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src=3D"sy14.files/image004.gif" v:shapes=3D"_x0000_i1026"><![endif]></sub><=
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</xml><![endif]--></span><span style=3D'font-family:SimSun;mso-ascii-font-f=
amily:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>&#30340;&#31243;=
&#24207;&#20026;&#65306;</span><span
lang=3DEN-US>[X,Y]=3Dsolve('x^2+y-6=3D0','y^2+x-6=3D0','x','y')</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><span
lang=3DEN-US>X =3D2, -3, 1/2-1/2*21^(1/2), 1/2+1/2*21^(1/2)</span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left;text-indent:42.0=
pt'><span
lang=3DEN-US>Y =3D2, -3, 1/2+1/2*21^(1/2), 1/2-1/2*21^(1/2)</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>3</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;&#26041;&#31243;&#32452;</span><=
span
lang=3DEN-US><sub><!--[if gte vml 1]><v:shape id=3D"_x0000_i1027" type=3D"#=
_x0000_t75"
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</v:shape><![endif]--><![if !vml]><img width=3D139 height=3D99
src=3D"sy14.files/image006.gif" v:shapes=3D"_x0000_i1027"><![endif]></sub><=
!--[if gte mso 9]><xml>
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</xml><![endif]--></span><span style=3D'font-family:SimSun;mso-ascii-font-f=
amily:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>&#30340;&#31243;=
&#24207;&#20026;&#65306;</span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left;text-indent:21.0=
pt'><span
lang=3DEN-US>clear</span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left;text-indent:21.0=
pt'><span
lang=3DEN-US>format rat</span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left;text-indent:21.0=
pt'><span
lang=3DEN-US>A=3D[5, 0, 4, 2;1, -1, 2, 1;4, 1, 2,0;1,1,1,1]</span><span
style=3D'font-family:SimSun;mso-ascii-font-family:"Times New Roman";mso-han=
si-font-family:
"Times New Roman"'>&#65307;</span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left;text-indent:21.0=
pt'><span
lang=3DEN-US>B=3D[3;1;1;0]</span><span style=3D'font-family:SimSun;mso-asci=
i-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>&#65307;</span><=
/p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left;text-indent:21.0=
pt'><span
lang=3DEN-US>X=3DA\B</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;&#35831;&#22823;&#23478;&#33258;&#24049;&#3681=
6;&#34892;&#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>4</span><span
style=3D'font-family:SimSun;mso-ascii-font-family:"Times New Roman";mso-han=
si-font-family:
"Times New Roman"'>&#65306;&#27714;&#26041;&#31243;&#32452;</span><span
lang=3DEN-US><sub><!--[if gte vml 1]><v:shape id=3D"_x0000_i1028" type=3D"#=
_x0000_t75"
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 <v:imagedata src=3D"sy14.files/image007.wmz" o:title=3D""/>
</v:shape><![endif]--><![if !vml]><img width=3D159 height=3D75
src=3D"sy14.files/image008.gif" v:shapes=3D"_x0000_i1028"><![endif]></sub><=
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</xml><![endif]--></span><span style=3D'font-family:SimSun;mso-ascii-font-f=
amily:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>&#30340;&#36890;=
&#35299;&#30340;&#31243;&#24207;&#20026;&#65306;</span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left;text-indent:21.0=
pt'><span
lang=3DEN-US>clear</span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left;text-indent:21.0=
pt'><span
lang=3DEN-US>format rat</span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left;text-indent:21.0=
pt'><span
lang=3DEN-US>A=3D[1,2,2,1;2,1,-2,-2;1,-1,-4,-3]</span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left;text-indent:21.0=
pt'><span
lang=3DEN-US>C=3Dnull(A,'r')<span
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </spa=
n></span><span
style=3D'font-family:SimSun;mso-ascii-font-family:"Times New Roman";mso-han=
si-font-family:
"Times New Roman"'>&#65285;&#27714;&#20986;&#30697;&#38453;</span><span
lang=3DEN-US>A</span><span style=3D'font-family:SimSun;mso-ascii-font-famil=
y:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>&#30340;&#35299;&#31354;&#38388;&#=