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lvseshijie

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×îÁ¯ÏüÎè

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3Â¥2015-11-14 08:26:03
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wurongjun

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lvseshijie: ½ð±Ò+10, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2015-11-14 09:42:51
½â·½³Ì¾ÍÐÐÀ²£¡
>> syms x y z
>> A=diag([x x x],0)+diag([y y],1)+diag([z z],-1)

A =

[ x, y, 0]
[ z, x, y]
[ 0, z, x]

>> f=det(A)

f =

x^3-2*z*y*x

>> solve(f,'x')

ans =

[                    0]
[  2^(1/2)*(y*z)^(1/2)]
[ -2^(1/2)*(y*z)^(1/2)]
ÉÆ¶ñµ½Í·ÖÕÓб¨,È˼äÕýµÀÊDz×É£.
2Â¥2015-11-13 21:20:04
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

lvseshijie

½ð³æ (ÕýʽдÊÖ)

ÒýÓûØÌû:
2Â¥: Originally posted by wurongjun at 2015-11-13 21:20:04
½â·½³Ì¾ÍÐÐÀ²£¡
>> syms x y z
>> A=diag(,0)+diag(,1)+diag(,-1)

A =





>> f=det(A)

f =

x^3-2*z*y*x

>> solve(f,'x')

ans =



...

лÀ²£¬ÎÊÌâ½â¾öÁË£¬ÎÒÓÃsolveÇó½âʱÔÚf±äÁ¿Á½±ß¼ÓÁ˸öµ¥ÒýºÅ£¬ËùÒÔÒ»Ö±Çó²»³öÀ´¡£
4Â¥2015-11-14 09:42:15
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

lvseshijie

½ð³æ (ÕýʽдÊÖ)

ÒýÓûØÌû:
3Â¥: Originally posted by ×îÁ¯ÏüÎè at 2015-11-14 08:26:03
°Ñ³ýÁËÒªÇóµÄ²ÎÊý£¬ÆäËûµÄÓà symsÔÚ³ÌÐòǰ±êÃ÷

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ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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