[MATLAB基础] 求助：算一个方程组 - MATLAB爱好者论坛-LabFans.com

dasenlin15 · 2009-07-12, 10:34

小弟是初学者，现在正算一个方程组，结果老是不正确，而且结果太长

f=('6250*pi*w+2500*pi*w*(15-y)+211/20-x')
g=('43466306092059616875/674000627826688-41662853313337276566282375/826324769715519488*log

(7242473746311675904000)-5215956731047154025/674000627826688*log(7242473746311675904000)

*y+41662853313337276566282375/826324769715519488*log(6829311361453916160000)

+5215956731047154025/674000627826688*log(6829311361453916160000)*y-u+2.259')
h=('1.03*y+1.84*y*u+2500*u-x')
q=('1165759369935748838219/189036835140272128-4069794457830493/14422365962240*y-w*(20-y)')

我用的命令是
hh=solve(f,g,h,q)
sol=[hh.x;hh.y;hh.u;hh.w]

2009-07-12, 10:34	#1
dasenlin15 初级会员注册日期: 2009-07-12 年龄: 39 帖子: 2 声望力: 0	求助：算一个方程组小弟是初学者，现在正算一个方程组，结果老是不正确，而且结果太长 f=('6250piw+2500piw(15-y)+211/20-x') g=('43466306092059616875/674000627826688-41662853313337276566282375/826324769715519488log (7242473746311675904000)-5215956731047154025/674000627826688log(7242473746311675904000) y+41662853313337276566282375/826324769715519488log(6829311361453916160000) +5215956731047154025/674000627826688log(6829311361453916160000)y-u+2.259') h=('1.03y+1.84yu+2500u-x') q=('1165759369935748838219/189036835140272128-4069794457830493/14422365962240y-w*(20-y)') 我用的命令是 hh=solve(f,g,h,q) sol=[hh.x;hh.y;hh.u;hh.w]