问题标题:
【如何用matlab解二元方程[x,y]=solve('1351.565-14.85*13-379.25*x-1.025*y.^2-27.25*y=0','222.5-2.7*13-27.75*x-0.45*y.^2-2.05*x*y-0.36*13*y=0','x','y')Errorusing==>solve>getEqnsat182'1351.565-14.85*13-379.25*x-1.025*y.^2-27.25*y=0'isn】
问题描述:
如何用matlab解二元方程
[x,y]=solve('1351.565-14.85*13-379.25*x-1.025*y.^2-27.25*y=0','222.5-2.7*13-27.75*x-0.45*y.^2-2.05*x*y-0.36*13*y=0','x','y')
Errorusing==>solve>getEqnsat182
'1351.565-14.85*13-379.25*x-1.025*y.^2-27.25*y=0'isnotavalidexpressionorequation.
Errorin==>solveat67
[eqns,vars]=getEqns(varargin{:});
什么情况啊?在线等————————————————
黄铁生回答:
[x,y]=solve()表达式里多了个点符号'.',去掉就可以了.即
[x,y]=solve('1351.565-14.85*13-379.25*x-1.025*y^2-27.25*y=0','222.5-2.7*13-27.75*x-0.45*y^2-2.05*x*y-0.36*13*y=0','x','y')
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