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cxsysss

Òø³æ (СÓÐÃûÆø)

[ÇóÖú] matlab help !!! ÒÑÓÐ1È˲ÎÓë

¸÷λ´óÉñ£¬Ð¡µÜÔËÓÃMATLAB±à³Ìʱ³öÏÖÈçÏÂÎÊÌ⣺
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xËæÖ®±ä»¯µÄһϵÁÐÖµ£¬ÔÙ½«Æäת»¯³Édouble ÀàÐÍ£¬È»ºó»­Í¼£¬ÏÂÃæÊdzÌÐòµÄÒ»²¿·ÖÔËÐе½ÕâÀïÏÔʾÁËÒÔÏÂÀ¨ºÅÖдíÎó£º

    £¨ ´Ó sym ת»»Îª double ʱ³öÏÖÒÔÏ´íÎó:
     DOUBLE cannot convert the input expression into a double£©


xmatrix=[];
for i=1:1:100
    xnew=x;
     t=0;
    xnew=subs(xnew);
    xnew=vpa(xnew);
    xmatrix(i)=xnew;
    t=t+0.1;
end
xmatrix
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ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

Mr__Right

ר¼Ò¹ËÎÊ (ÖøÃûдÊÖ)

matlab ²»ÊÇÕâôÓõÄ
ÎÄÕÂÄËÉíÍâÖ®Îï,Òª¶à¿¼ÂDZ༭¡¢Éó¸åÈ˺ͶÁÕߵĸÐÊÜ¡£
2Â¥2017-04-07 11:19:11
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

cxsysss

Òø³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
2Â¥: Originally posted by Mr__Right at 2017-04-07 11:19:11
matlab ²»ÊÇÕâôÓõÄ

Ŷ£¬ÄǸÃÔõôÕû°¡£¬ÎҸijÉt=sym(0)½á¹û»¹ÊÇÒ»Ñù£¬xnewµÄÊôÐÔ»¹ÊÇsym£¬»¹ÊÇtµÄº¯Êý£¡

·¢×ÔСľ³æAndroid¿Í»§¶Ë
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3Â¥2017-04-07 16:16:21
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

pdl9527

ר¼Ò¹ËÎÊ (СÓÐÃûÆø)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
cxsysss: ½ð±Ò+5, ¡ï¡ï¡ïºÜÓаïÖú, ллÄãÁË😊£¡ 2017-04-08 11:00:06
ʹÓÃǶÌ׺¯Êý£¬»òÕ߲ο¼ÏÂÃæµÄÀý×Ó¡£
CODE:
function question_37
clear;clc
syms x t
x=t/10+1;
tt=0;
for i=1:1:100
    xnew=subs(x,t,tt);
    xnew=vpa(xnew);
    xmatrix(i)=xnew;
    tt=tt+0.1;
end
plot(0:0.1:9.9,xmatrix)

4Â¥2017-04-07 17:13:15
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

Çï·¸

Òø³æ (ÕýʽдÊÖ)

5Â¥2017-04-07 21:08:04
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

cxsysss

Òø³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
4Â¥: Originally posted by pdl9527 at 2017-04-07 17:13:15
ʹÓÃǶÌ׺¯Êý£¬»òÕ߲ο¼ÏÂÃæµÄÀý×Ó¡£


function question_37
clear;clc
syms x t
x=t/10+1;
tt=0;
for i=1:1:100
    xnew=subs(x,t,tt);
    xnew=vpa(xnew);
    xmatrix(i)=xnew;
    tt=tt+0.1;
...

ллÄãÁË£¡

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6Â¥2017-04-08 11:00:35
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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