12x231=132x21,13x341=143x31.=_=
12x231=132x21,13x341=143x31.=_=
lingo 提示语法错误 Max=12*x31+7*x32+13*x33-0.5*x21-0.5*x22-0.5*x23
求问lingo大神!model:max=3*x11+9*x12-7*x21-x22-x31+5*x32-6*x41;0.
66x21十19x21十85x19=?求简算!
Lingo程序中,a=@if(x11-x21#ge#0,0,x21-x11)是什么意思?
巧算:『125x41』x8=?540x31÷270=?808x125=?
matlab循环计算x11=0.3 x21=0.4x12=0.254273-0.155503x11+0.560625x2
1/1X3+1/3X5+1/5X7...1/17X19+1/19X21=
model: min=800*x11+1000*x12+1200*x13+700*x21+500*x22+700*x23
求一元线性回归方程Y=aX+b a,b的值.期中 X1,X2,……X31=40,41,42,43,44,45,46,47
设x1,x2是方程x2-x-2013=0的两实数根,则x31+2014x 2−2013
简便计算,66X21+19X21+85X19===这样发来,是人教版数学小状元四年级下册的23页的第7题的第一小题,最好