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watertxf

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clear
clc
syms x
a=0.001:0.001:0.2;
for i=1:200
    f=a(i)*x^4-5.76*10^20*a(i)*x^2-2.273746798*10^21*x^2+1.332417724416*10^42-20000i*a*x^3+4.626450432*10^25i*x;
    result=solve(f)
end
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result =

[ empty sym ]

Warning: 200 equations in 1 variables.
> In F:\Program Files\MATLAB\R2013a\toolbox\symbolic\symbolic\symengine.p>symengine at 56
  In mupadengine.mupadengine>mupadengine.evalin at 97
  In mupadengine.mupadengine>mupadengine.feval at 150
  In solve at 170
  In wenxian2000 at 8
Warning: Explicit solution could not be found.
> In solve at 179
  In wenxian2000 at 8
ÔõÑùÓÃmatlab»òÕßÊÇmathcadÇó½âº¬Óбä²ÎÊýµÄËĴη½³Ì£¿
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[ Last edited by watertxf on 2013-10-17 at 10:20 ]
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jerkwin

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watertxf

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2Â¥: Originally posted by jerkwin at 2013-10-17 10:25:00
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baobiao007

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watertxf: ½ð±Ò+10 2013-10-28 08:25:21
f=a(i)*x^4-5.76*10^20*a(i)*x^2-2.273746798*10^21*x^2+1.332417724416*10^42-20000i*a*x^3+4.626450432*10^25i*x;

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4Â¥2013-10-17 11:07:05
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ÔÂÖ»À¶

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CODE:
clear
clear
clc
syms x
a=0.001:0.001:0.2;
for i=1:200
    f=a(i)*x^4-5.76*10^20*a(i)*x^2-2.273746798*10^21*x^2+1.332417724416*10^42-20000i*a(i)*x^3+4.626450432*10^25i*x;
    result=solve(f)
end

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5Â¥2013-10-17 13:48:19
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

watertxf

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Ëͺ컨һ¶ä
ÒýÓûØÌû:
5Â¥: Originally posted by ÔÂÖ»À¶ at 2013-10-17 13:48:19
clear
clear
clc
syms x
a=0.001:0.001:0.2;
for i=1:200
    f=a(i)*x^4-5.76*10^20*a(i)*x^2-2.273746798*10^21*x^2+1.332417724416*10^42-20000i*a(i)*x^3+4.626450432*10^25i*x;
    result=solve(f)
...

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6Â¥2013-10-17 15:27:26
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ÔÂÖ»À¶

Ö÷¹ÜÇø³¤ (Ö°Òµ×÷¼Ò)

ÒýÓûØÌû:
6Â¥: Originally posted by watertxf at 2013-10-17 15:27:26
Ì«¸ÐлÁË£¡Ëã³öÀ´µÄ½á¹ûÔõôÑùÌáÈ¡³öÿ¸ö¸ùµÄʵ²¿ºÍÐé²¿ÄØ£¿...

real(x)
imag(x)
MATLAB¡¢MSСÎÊÌâ¡¢ÆÕͨÎÊÌâÇë·¢ÌûÇóÖú£¡Ê±¼ä¾«Á¦ÓÐÏÞ£¬Ë¡²»½ÓÊÜÎÞ³¥Ë½ÐÅÇóÖú¡£
7Â¥2013-10-17 15:31:33
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

watertxf

Ìú³æ (³õÈëÎÄ̳)

ÒýÓûØÌû:
7Â¥: Originally posted by ÔÂÖ»À¶ at 2013-10-17 15:31:33
real(x)
imag(x)...

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