📄 11.htm
字号:
style='font-family:"Times New Roman"'>c</span>为符号多项式<span lang=EN-US
style='font-family:"Times New Roman"'><o:p></o:p></span></p>
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<p align=center style='text-align:center'><span lang=EN-US style='font-family:
"Times New Roman";color:red'>pretty(S)<o:p></o:p></span></p>
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<p align=center style='text-align:center'>将<span lang=EN-US style='font-family:
"Times New Roman"'>S</span>显示成数学式<span lang=EN-US style='font-family:"Times New Roman"'><o:p></o:p></span></p>
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<td width=239 valign=top style='width:179.6pt;border:solid windowtext .5pt;
border-top:none;mso-border-top-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
<p align=center style='text-align:center'><span lang=EN-US style='font-family:
"Times New Roman";color:red'>sym2poly(S)<o:p></o:p></span></p>
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none;border-bottom:solid windowtext .5pt;border-right:solid windowtext .5pt;
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padding:0cm 5.4pt 0cm 5.4pt'>
<p align=center style='text-align:center'>转换<span lang=EN-US
style='font-family:"Times New Roman"'>S</span>为多项式系数向量<span lang=EN-US
style='font-family:"Times New Roman"'><o:p></o:p></span></p>
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<td width=239 valign=top style='width:179.6pt;border:solid windowtext .5pt;
border-top:none;mso-border-top-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
<p align=center style='text-align:center'><span lang=EN-US style='font-family:
"Times New Roman";color:red'>symadd(A,B)<o:p></o:p></span></p>
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<td width=329 valign=top style='width:246.5pt;border-top:none;border-left:
none;border-bottom:solid windowtext .5pt;border-right:solid windowtext .5pt;
mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt;
padding:0cm 5.4pt 0cm 5.4pt'>
<p align=center style='text-align:center'>执行<span lang=EN-US
style='font-family:"Times New Roman"'>A+B</span>的符号加法<span lang=EN-US
style='font-family:"Times New Roman"'><o:p></o:p></span></p>
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<td width=239 valign=top style='width:179.6pt;border:solid windowtext .5pt;
border-top:none;mso-border-top-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
<p align=center style='text-align:center'><span lang=EN-US style='font-family:
"Times New Roman";color:red'>symdiv(A,B)<o:p></o:p></span></p>
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<td width=329 valign=top style='width:246.5pt;border-top:none;border-left:
none;border-bottom:solid windowtext .5pt;border-right:solid windowtext .5pt;
mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt;
padding:0cm 5.4pt 0cm 5.4pt'>
<p align=center style='text-align:center'>执行<span lang=EN-US
style='font-family:"Times New Roman"'>A+B</span>的符号除法<span lang=EN-US
style='font-family:"Times New Roman"'><o:p></o:p></span></p>
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<td width=239 valign=top style='width:179.6pt;border:solid windowtext .5pt;
border-top:none;mso-border-top-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
<p align=center style='text-align:center'><span lang=EN-US style='font-family:
"Times New Roman";color:red'>symmul(A,B)<o:p></o:p></span></p>
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<td width=329 valign=top style='width:246.5pt;border-top:none;border-left:
none;border-bottom:solid windowtext .5pt;border-right:solid windowtext .5pt;
mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt;
padding:0cm 5.4pt 0cm 5.4pt'>
<p align=center style='text-align:center'>执行<span lang=EN-US
style='font-family:"Times New Roman"'>A+B</span>的符号乘法<span lang=EN-US
style='font-family:"Times New Roman"'><o:p></o:p></span></p>
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<td width=239 valign=top style='width:179.6pt;border:solid windowtext .5pt;
border-top:none;mso-border-top-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
<p align=center style='text-align:center'><span lang=EN-US style='font-family:
"Times New Roman";color:red'>sympow(S,p)<o:p></o:p></span></p>
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<td width=329 valign=top style='width:246.5pt;border-top:none;border-left:
none;border-bottom:solid windowtext .5pt;border-right:solid windowtext .5pt;
mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt;
padding:0cm 5.4pt 0cm 5.4pt'>
<p align=center style='text-align:center'>执行<span lang=EN-US
style='font-family:"Times New Roman"'>S^p</span>的符号次方运算<span lang=EN-US
style='font-family:"Times New Roman"'><o:p></o:p></span></p>
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<td width=239 valign=top style='width:179.6pt;border:solid windowtext .5pt;
border-top:none;mso-border-top-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
<p align=center style='text-align:center'><span lang=EN-US style='font-family:
"Times New Roman";color:red'>symsub(A,B)<o:p></o:p></span></p>
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<td width=329 valign=top style='width:246.5pt;border-top:none;border-left:
none;border-bottom:solid windowtext .5pt;border-right:solid windowtext .5pt;
mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt;
padding:0cm 5.4pt 0cm 5.4pt'>
<p align=center style='text-align:center'>执行<span lang=EN-US
style='font-family:"Times New Roman"'>A+B</span>的符号减法<span lang=EN-US
style='font-family:"Times New Roman"'><o:p></o:p></span></p>
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<p class=MsoNormal style='margin-left:2.0gd'><span lang=EN-US style='color:
blue'>?syms x<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:2.0gd'><span lang=EN-US style='color:
blue'>?s=2*x^2;<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:2.0gd'><span lang=EN-US style='color:
blue'>?horner(s) <o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:2.0gd'><span lang=EN-US style='color:
blue'>ans = <o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:2.0gd'><span lang=EN-US style='color:
blue'>2*x^2<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:2.0gd'><span lang=EN-US style='color:
blue'>?pretty(s) <o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:2.0gd'><span lang=EN-US style='color:
blue'><span style="mso-spacerun:
yes">
</span>2<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:2.0gd;text-indent:194.25pt'><span
lang=EN-US style='color:blue'>2 x<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'><span
style="mso-spacerun: yes"> </span>?s=3*x^4+4*x^3+x+20;<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'>?sym2poly(s)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'>ans =<o:p></o:p></span></p>
<p class=Normal style='text-indent:26.25pt;tab-stops:21.0pt;mso-layout-grid-align:
auto;punctuation-wrap:hanging'><span lang=EN-US style='mso-bidi-font-size:12.0pt;
color:blue;mso-font-kerning:1.0pt'>3<span style="mso-spacerun:
yes"> </span>4<span style="mso-spacerun:
yes"> </span>0<span style="mso-spacerun:
yes"> </span>1<span style="mso-spacerun:
yes"> </span>20<o:p></o:p></span></p>
<p class=Normal align=center style='text-align:center;text-indent:26.25pt;
tab-stops:21.0pt;mso-layout-grid-align:auto;punctuation-wrap:hanging'><b><span
style='font-size:16.0pt;mso-bidi-font-size:10.0pt;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";color:blue'>符号微积分</span></b><b><span
lang=EN-US style='font-size:16.0pt;mso-bidi-font-size:10.0pt;color:blue'><o:p></o:p></span></b></p>
<p class=MsoNormal style='margin-left:42.0pt;text-indent:-21.0pt;mso-list:l1 level1 lfo1;
tab-stops:21.25pt list 42.0pt;mso-layout-grid-align:none;punctuation-wrap:simple'>
<span
lang=EN-US style='font-family:Wingdings'>l<span style='font:7.0pt "Times New Roman"'>
</span></span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>符号微分</span></p>
<p class=Normal><span class=Input><span lang=EN-US style='font-size:10.0pt;
mso-bidi-font-size:12.0pt;font-family:"Courier New";mso-bidi-font-family:"Times New Roman";
color:blue;mso-font-kerning:1.0pt;font-weight:normal'>?syms x<o:p></o:p></span></span></p>
<p class=Normal><span lang=EN-US style='color:blue'>?s=3*x^4+4*x^3+x+20;<o:p></o:p></span></p>
<p class=Normal><span lang=EN-US style='color:blue'>?diff(s)%</span><span
class=Input><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New";
mso-bidi-font-family:"Times New Roman";color:blue;font-weight:normal'> </span></span><span
class=Input><span style='font-size:10.0pt;font-family:宋体;mso-ascii-font-family:
"Courier New";mso-hansi-font-family:"Courier New";color:blue;font-weight:normal'>对</span></span><span
class=Input><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New";
mso-bidi-font-family:"Times New Roman";color:blue;font-weight:normal'>x</span></span><span
class=Input><span style='font-size:10.0pt;font-family:宋体;mso-ascii-font-family:
"Courier New";mso-hansi-font-family:"Courier New";color:blue;font-weight:normal'>的导数</span></span><span
lang=EN-US style='color:blue'> <o:p></o:p></span></p>
<p class=Normal><span lang=EN-US style='color:blue'>ans = <o:p></o:p></span></p>
<p class=Normal><span lang=EN-US style='color:blue'>12*x^3+12*x^2+1 <o:p></o:p></span></p>
<p class=Normal><span lang=EN-US style='color:blue'>?diff(s,x,2)%</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";color:blue'>求</span><span class=Input><span style='font-size:
10.0pt;font-family:宋体;mso-ascii-font-family:"Courier New";mso-hansi-font-family:
"Courier New";color:blue;font-weight:normal'>二阶导数</span></span><span
lang=EN-US style='color:blue'> <o:p></o:p></span></p>
<p class=Normal><span lang=EN-US style='color:blue'>ans = <o:p></o:p></span></p>
<p class=Normal><span lang=EN-US style='color:blue'>36*x^2+24*x<o:p></o:p></span></p>
<p class=Normal style='margin-left:42.0pt;text-indent:-21.0pt;mso-list:l1 level1 lfo1;
tab-stops:21.25pt list 42.0pt'><span lang=EN-US
style='font-family:Wingdings;color:blue'>l<span style='font:7.0pt "Times New Roman"'>
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